Winsper Takes Stake in I-Shop Radium

http://www.adweek.com/aw/content_display/news/agency/e3i381632271e5e8b966cb744ab3ca4829b
BOSTON Independent agency Winsper today said it has taken a minority stake in i-shop Raduim, a company that specializes in search marketing and social media.
Radium is headquartered in New York with a satellite office at Winsper's office Boston; its founder, Rich Angstadt, is a former Winsper staffer.
The firms have teamed up before, with Radium supporting Winsper clients such as Quench, Black Cat Lodge and Richardson. On its own, Radium works for accounts like Nuance, Maui Jim Sunglasses and Hylighter, among others.