With MySpace failing to meet its internal revenue targets, executives there whose compensation is tied to those targets may now be more open to job offers from startups. Mochi Media, for instance, just hired Carol Werner as its VP of sales. Previously, she was in charge of West Coast sales for MySpace.

If more MySpace execs follow her, Yahoo won’t be the only big Web company that needs to worry about a talent exodus. Incidentally, last month Mochi hired its VP of engineering, Eric Boyd, from Yahoo. It will take talent from wherever it is fleeing fastest.

Mochi Media is an ad network for Flash games. the ads appear at different stages of the games, and Mochi splits revenues with game developers. It’s ads are in games that reaches 50 million gamers a months, says the company.