Mike Isaac

Recent Posts by Mike Isaac

Foursquare Biz Dev Tristan Walker Checks Out, Heads to Andreessen Horowitz

Foursquare employee Tristan Walker announced on Wednesday that he’ll be leaving the social check-in start-up for a gig at Andreessen Horowitz, where his new title will be Entrepreneur in Residence. Walker leaves Foursquare after two-and-a-half years as VP of Business Development, and was one of the company’s earliest employees.


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There was a worry before I started this that I was going to burn every bridge I had. But I realize now that there are some bridges that are worth burning.

— Valleywag editor Sam Biddle