I have a .info for one of my legitimate projects.
I registered before I knew any better, but seems to have had no impact on my SE [that I am aware of]
I rank pretty well for some good terms [and I dont even specifically target any at the minute]
I wonder if its more of an initial SE thing, i.e. initially you may take a hit, but if you get enough good links and optimise enough there should be no reason why a .info cant rank up with a .com?
But they are cheaper so maybe for arbitrage its better? Plus you can probably get better names