I've been playing NL5 lately, because my BR is dangerously low for NL10, and, uh...there are some real psychopaths playing NL5. Openshoving 70BB from middle position with KJ suited, 3 barrell bluffing, CRAI on flop with bottom pair, etc.
This is not what I expected for NL5. Sir Cuddles is right, limping and seeing lots of flops is profitable at this level, as people like to limp. But from what I've seen so far, things get extremely aggressive after the flop. Much more so than my experience at NL10. I'm very confused by this.
p.s. It is kind of hilarious when you see what people commit their stacks with at NL5.