In The Next Version

Acquisitions and funding related to Social Business. (including HR, mobile, customer engagement, social media, etc)
 

Release	Company A		Company B	Terms	Industry
Jun 04, 2012	Salesforce	acquires	Buddy Media	$689M	Social media marketing platform
May 30, 2012	InterWest Partners	invests in	Badgeville	$25M Series C Round	Gamification. Behavior Dynamics.
May 24, 2012	Bizaarvoice	acquires	PowerReviews	~152M in cash and stock	Social content and social engagement
May 24, 2012	Jafco Ventures, DAG Ventures, Subrah Iyar, Herb Madan	invests in	Huddle	$24 million Series C	Collaboration, file sharing, ECM
May 23, 2012	Oracle	acquires	Vitrue		Social marketing and customer engagement
May 21, 2012	SAP	acquires	Ariba	$4.5B	Cloud-based commerce network (invoicing, payments, etc.)
May 21, 2012	EMC	acquires	Syncplicity		File Management
May 03, 2012	LinkedIn	acquires	SlideShare	$119M	Collaboration (presentations, documents, videos)
May 02, 2012	IBM	acquires	Tealeaf		Analytics, Customer Experience
May 01, 2012	Salesforce	acquires	Stypi		Collaboration (real-time co-authoring of pages)
May 01, 2012	Bedford Funding / Peoplefluent	acquires	Socialtext		Collaboration , Enterprise Social Networking
Apr 18, 2012	Marketo	acquires	Crowd Factory		Social media marketing platform
Apr 11, 2012	Atos	acquires	bluekiwi		Collaboration , Enterprise Social Networking
Apr 11, 2012	Yammer	acquires	oneDrum		Collaboration , Enterprise Social Networking
Apr 11, 2012	Citrix	acquires	Podio		Collaboration , Enterprise Social Networking
Apr 09, 2012	Facebook	acquires	Instagram	$1B	Photo sharing / social networking
Apr 03, 2012	Foundry Group	invests in	BigDoor	$5M	gamification
Mar 21, 2012	Warburg Pincus	invests in	Spigit	$15.2 Million series E financing	Ideation/Social Innovation
Mar 15, 2012	General Atlantic	invests in	Appirio	$60M	Cloud application service provider/professional services
Mar 09, 2012	Cornerstone Ondemand	acquires	Sonar6	$US13M +$US1M in shares	HR
Mar 07, 2012	Atlassian	acquires	HipChat		Social business software - chat, instant messaging
Feb 09, 2012	Octopus Investments	invests in	Artesian Solutions	£2Million
Feb 09, 2012	Thismoment	acquires	Position2		Social media monitoring
Feb 09, 2012	Dassault Systèmes	acquires	Netvibes	$26 million	dashboards
Feb 09, 2012	Oracle	acquires	Taleo	$1.9 billion	Talent Management
Jan 31, 2012	Peoplefluent	acquires	Strategia		Talent Management , Learning Management
Jan 31, 2012	IBM	acquires	Worklight		Mobile
Dec 19, 2011	Telligent	acquires	Leverage		social business software
Dec 15, 2011	Salesforce.com	acquires	Rypple		Human Capital Management
Dec 03, 2011	SAP	acquires	SuccessFactors	$3.4 billion	Human Capital Management
Nov 14, 2011	Salesforce.com	acquires	Model Metrics		mobile and social cloud consulting services
Oct 24, 2011	Oracle	acquires	RightNow	$1.5 billion	customer service
Oct 18, 2011	Oracle	acquires	Endeca		unstructured data management, business intelligence, web commerce
Sep 21, 2011	Salesforce.com	acquires	Assistly	$50 million	customer service
May 23, 2011	Jive	acquires	OffiSync	$30 million	social productivity apps
April 26, 2011	SuccessFactors	acquires	Plateau	$390 million	learning management
April 13, 2011	Jive	acquires	Proximal Labs		social network analytics
Mar 30, 2011	Salesforce.com	acquires	Radian6	$326 million	Social media monitoring
May 31, 2011	VMWare	acquires	SocialCast		Enterprise social networking
Mar 14, 2011	SuccessFactors	acquires	Jambok		social business software , video
Feb 01, 2011	Salesforce.com	acquires	ManyMoon		social productivity apps
Jan 06, 2011	Salesforce.com	acquires	Dimdim	$31 million	real-time communication technologies

Due to a technical limitation with the size of the table above I've removed entries older than 2011. I'll correct this soon using a different table.