Aamir Khan photographed at a screening of Katti Batti and Jon Snow in a still from Game Of Thrones.
It was all happening on Twitter this year - from celebrity tweets making headlines to trending topics endlessly debated, Twitter was both a virtual newsroom as well as a barometer of public opinion. Not only did several conversations shift online, many were original products of discussions that took place in 140 characters or under.
Here are 10 showbiz moments that stand out in Twitter's 2015.
Aamir Khan. So Much Aamir Khan:Actor Aamir Khan is a man of few tweets. Until the second week of December 2015, his timeline had only 70 posts from him - one of them blank - and he routinely goes days, weeks and months without tweeting at all. That is not to say he doesn't inspire tweets and trends - this year, the 50-year-old star was India's favourite entertainer to discuss on the microblogging site and very little of it was flattering. At the beginning of 2015, Aamir's criticism of the controversial AIB Roast prompted a mini-debate over free speech and whether Aamir had forgotten his own provocative films
Delhi Belly (he produced) and
PK (he starred). In November, Aamir trended for 48 hours at a stretch after saying that his wife Kiran had suggested they leave India because of rising 'intolerance.' Twitter instantly took exception and for an entire day, the actor was the top Indian trend with actors like Rishi Kapoor and Anupam Kher leading the charge against him.
By the evening, the trend had shifted in his favour with supporters insisting he had the right to express his opinion. In the months between, Aamir also made showbiz headlines by tweeting a casting call for a film, the response to which was so overwhelming that it crashed his office server, and he also trended more than once because of what seems to be a pathological inability to hold back tears while watching a film - he cried in Salman Khan's
Bajrangi Bhaijaan, Kalki Koechlin's
Margarita, With A Straw and nephew Imran Khan's
Katti Batti, providing Twitter's resident humorists with some of their best material. Since it appears he cannot stop crying, expect more waterworks in 2016.
Aamir also participated in a massive three-way Khans-only exercise (more about that below) and tweeted the first look of his own work-in-production
Dangal.
The Khan-to-Khan Network:In a stunning PR win for Bollywood, Salman got his Khan
bhaijaans Shah Rukh and Aamir to reveal the semi-first look of his new film
Bajrangi Bhaijaan on Twitter. It was both affirmative action for the 'brotherhood' (apparently better than
heropanti) between SRK and Salman, who had only recently concluded a six-year feud, and also a monumental reaping of the benefits offered by the social media following of Bollywood's ruling trifecta - between them, SRK and Aamir have 31 million fans on Twitter. It might have been sheer magnanimity, it might have been clever spin doctoring - whatever the motivation, it was a massive break from protocol and one that proved very effective.
Caitlyn Jenner Gets Star Billing: 
Caitlyn Jenner in a still from the Vanity Fair covershootShe scored a million followers within four hours of joining Twitter on June 1, breaking the record set by Barack Obama last year by an hour. Her very first tweet was of the Vanity Fair cover on which she had debuted her new self - transgender Olympic champ Caitlyn Jenner, formerly known as Bruce - and the hashtag #CallMeCaitlyn trended worldwide almst instantly. The athlete-tuned-TV-personality write in her second tweet: "I'm so happy after such a long struggle to be living my true self. Welcome to the world Caitlyn. Can't wait for you to get to know her/me." It was a glorious moment for both the transgender community and social media.
With Friends Like These:In May, Salman Khan was convicted in the hit-and-run case and sentenced to five years in jail by a Mumbai sessions court. The
aam aadmi cheered the verdict on Twitter while the actor's friends closed ranks. Some pro-Salman tweets caused particular outrage - jewellery designer Farah Khan Ali and singer Abhijeet were eviscerated for tweets such as these:
In December, the Bombay High Court ruled that Salman could not be convicted on the basis of evidence produced. This time, Bollywood was mostly silent.
Ranveer Loves Twitter. The Feeling is Mutual:Bollywood's most flamboyant star has a rep to protect and Ranveer Singh, true to form, created a reality Twitter show by 'live tweeting' from the operating theatre. In April, Ranveer required surgery after injuring his shoulder on the sets of new film
Bajirao Mastani and carefully recorded a log of his hospital time:
Half an hour within his first tweet, he signed off:
And this was Twitter's response to Ranveer Baba's 'whole new level of crazy":
AIB Roast, Neither Rare Nor Medium But Very Well Done: Comedy collective AIB organised and executed India's first ever 'roast,' with
Gunday co-stars Arjun Kapoor and Ranveer Singh as the subjects and filmmaker Karan Johar as the 'roastmaster.' In January, they released an edited version of the event on YouTube, where it was widely watched. It was also widely debated online, with Twitter almost equally divided over whether the Roast was funny or offensive. Several trending hashtags were spawned from the relatively tame '#AIBRoast' to the more explicit 'We Stand By AIB Knockout' and 'AIB National Shame.' Days later, AIB took the Roast offline. Ranveer and Arjun maintained a stoic silence on Twitter as did actress Deepika Padukone who was made the butt of several jokes. KJo and actresses Sonakshi Sinha and Alia Bhatt, who also got picked on, made oblique references to the Roast in these tweets:
Rishi Kapoor Retires From Twitter. Oh, Wait...Rishi Kapoor, an agent provocateur of sorts on Twitter, has to frequently explain his jokes to those who don't get his humour and often complains about people taking everything too seriously. On May 7, the 63-year-old actor decided he'd had enough and announced he was retiring from the microblogging site.
"Chintu Uncle, please don't! We love having you on Twitter," wrote actress Sonam Kapoor in response. In a half a day, Mr Kapoor had ended his self-imposed retirement - but it wasn't Sonam's pleading that made him change his mind. He returned courtesy a mysterious somebody named Sajid.
Dear James Bondji, Why so Unsanskaari?:Among the more hilarious hashtags this year was the one that Twitter thought up when the Censor Board chopped James Bond's kissing scenes by half in the new film
SPECTRE. #SanskariJamesBond trended blithely for over 24 hours, raising everyone's spirits with mirthful suggestions on how the hard-drinking, womanising 007 could best adapt to desi standards of acceptable behaviour (acceptable by the Censor Board).
Here are a few of the best ones. It's okay, you can ROFL:
The Dress That Sonam Kapoor Wore:Poor Sonam's usually faultless instinct for fashion appeared to have deserted her during her final appearance at this year's Cannes Film Festival. She glided down the red carpet in a giant sorbet-coloured Elie Saab dress which the Internet decided it hated from the bottom of its virtual heart.
#TheDress reminded Twitter of Sesame Street's Big Bird, Cousin Itt from The Addams Family, grass and even Sonam's famously hirsute father Anil Kapoor.
Twitter Wears Black For McDreamy and Jon Snow:The TV-watching world was dealt two blows this year. In April,
Grey's Anatomy fans were left devastated when Dr Derek Shepherd was rudely killed with no warning. The death of McDreamy, as he was called, prompted a huge outpouring of grief.
Twitter had barely recovered when, in June, one of the most popular characters on
Game Of Thrones was flatlined in the season finale. Jon Snow's brutal and unexpected murder led to a series of conspiracy theories and fan speculation that the character would somehow be resurrected in the next season, but not before Twitter had spiralled into deep mourning with tweets such as these: