Link roundup

1. Cool Foo Fighters concert t-shirts.

2. Fascinating article at Wired about tech startup incubator Y Combinator, including an anecdote about an investor "who dropped more than $6 million on companies he knows almost nothing about—indeed, some of which haven’t yet decided what business they’re in."

3. A video game company retaliated against a negative review of their game by encouraging employees to write negative reviews about the author's novel. Via.