Buddy Media, a US-based social media marketing company backed by advertising group WPP, has bought peer Spinback, which helps retailers track the return on investment for their social media efforts.
In November, WPP, the world’s largest marketing agency, invested $5m in Buddy Media as an add-on to the $23m series C round that closed in the summer from venture capital firms Greycroft Partners, Bay Partners, Institutional Venture Partners and Softbank Capital.
Softbank Capital had led Buddy’s $6.5m series B round in April 2008, which also included European Founders Fund and a number of other angel investors, while its series A had closed at $1.7m.