What's Happened in Social Media Over the Year
As we did last year, we have gone back through our archives and picked out some of the most noteworthy social media items we have covered since 2009 began. Now that 2009 is almost over, it was worth going back and seeing what all has happened.
If you come across missing items, please feel free to share them in the comments.
January
In January, Twitter announced that it hired Kevin Thau as Director of Mobile Business Development, and that he would be working on a variety of different fronts as Twitter's "first official business development guru." LinkedIn introduced a new Polls feature, and launched a bookmarklet for IE. MySpace Music made deals with Nettwerk Music Group, INgrooves, IRIS Distribution, and RoyaltyShare to bolster its catalog by hundreds of thousands of songs. YouTube expanded its e-commerce platform and started letting people delete their own comments. Digg launched the "People who Dugg this also Dugg" feature.
February
In February, LinkedIn launched a set of HR Tools and launched a German version. MySpace launched a mobile redesign, and Digg updated its algorithm. Facebook introduced polling ads, changed its terms of service, made some design changes to profile pages for businesses, opened its corporate blog to comments, introduced the comments box widget, and launched the "like" button. Google introduced the Social Bar and launched Friend Connect integration with Blogger.
March
In March, Twitter brought its search box to most people's Twitter home page, and changed the "replies" tab to the "@username" tab. Twitter also adjusted the title tags for member pages. Where they used to go "Twitter / username" they would now go "User's Real Name (username) on Twitter". Mahalo CEO Jason Calacanis offered to buy a spot on Twitter's Suggested Users list.
Facebook launched a redesign, started including updates from Pages in the news feed, changed pages to operate like profiles, and changed the status box to the publisher box. They launched the ability to let users chat within apps, added ad spots to Pages, relaunched Facebook Marketplace to be powered by online classified service Oodle, launched Facebook Connect for the iPhone and iPod Touch, launched some new ad targeting options, and enabled Page owners to let people sign up to become fans via text message.
Google began implementing Portable Contacts, launched the Friend Connect API, blended user-generated content into search results on Google Maps, made Google Reader more social with commenting, allowed for richer Gmail messages, and started its own Twitter accounts.
YouTube changed the name of some video sections, LinkedIn did some redesigning of its own and enhanced Direct Ads, and MySpace was stamped on a credit card.
April
Google launched an event gadget for Google Friend Connect, the Digg-like "What's Popular" gadget, and the "Get Answers" gadget for Friend Connect. Google also gave profiles vanity URLS and started putting profiles into search results.
Facebook made it easier to organize friends, opened its stream up to third-party developers, added electronic signatures for public pages, worked with the blind on accessibility, began making app recommendations, and readied its next steps in governance.
Twitter started integrating search into its interface more, and CNN showed that you can buy/sell a Twitter account. Scientists created a brain-Twitter interface.
StumbleUpon broke away from eBay and enhanced its "web stumbling." Digg launched the controversial DiggBar. Reddit launched a video site, AOL launched SocialThing, and Yahoo shifted its focus to social altogether. YouTube launched the beta version of YouTube RealTime. MySpace got some new management.
May
In May, Yahoo 360 went away, Digg dropped shouting, LinkedIn upped usability on the Action Bar, the Wall Street Journal gave its employees social media rules, and the Interactive Advertising Bureau released its social advertising best practices and social media ad metrics.
Google introduced Google Wave, launched a recommendation gadget for Friend Connect, launched comment translation for Friend Connect, and added more social features to Google Reader. Twitter launched full two-way SMS support for Telus, Virgin Moible, and Koodo Mobile, making it available on every major operator in Canda. Twitter also changed how users view replies.
Iran lifted its ban on Facebook, and Facebook rolled out real-time streams, announced an app directory overhaul, added pop-up notifications, and linked accounts with Gmail. YouTube launched a new way for brands to engage audiences, and began letting you log-in with your Google account.
June
In June, Facebook began offering keyword suggestions for advertisers, simplified the inbox, began letting users get friends' updates via text message, and launched the Live Stream Box.
YouTube launched a page for movie trailers, FriendFeed added file sharing, LinkedIn got a new CEO and updated its search tool for recruiting, MySpace cut a big chunk of its staff, StumbleUpon launched a URL shortener, and Digg started showing Digg Ads.

edit: Online_Marketing/auto___what_s_happened_in_social_media_over_the_year.wikieditish...