Things around here seem a lot fluffier these days, though I don't know if that's due to the rep system, other factors, or if it's all in my head. Maybe a combination.
No, I agree with this, however I believe the timing was coincidental. I have seen some influence from the reputation system, but not a significant amount. I'm rather indifferent, although at this point the influence is more or less gaining speed - so if it stays or not, the influence will remain for some time.
I actually rather like it the current tone. Maybe one small exception - I like serious threads and I haven't had my fill, and it has become hard to find an... exploratory(?) thread.