[Michael C.]

I don't know about others here, but I fairly often bet 15 by accident when I'm multi-tabling. It especially happens when I want to automatically hit "bet the pot" and then by the time it comes to me I ended up mini-betting instead. It's of course entirely possible there's a real reason, but that actually seems more likely to me than anything else. Anyway, I'd probably have treated it as a check, and I might have raised something into it to see how he responds. But if you think the mini-bet was intentional, than inducing a bluff is an interesting line. Honestly, it's hard for me to put villian on anything here.