This is cool and all, but you probably want to compare April of this year to April of last year (and previous years). My company (Virtualmin, 76 on the list) has pretty big fluctuations throughout the year, with early months (specifically January) being the best, and December being the worst. So, if you were to compare December to January for us, you'd see a huge spike upward...but if you compared January to February, you'd see a small drop downward (and that trend might even continue throughout the year...though it seems to not be happening that way between March and April).

I'm just saying this is a pretty limited view of these sites, and it'd be difficult to draw useful conclusions from it. Our traffic probably isn't growing faster than more recent YC companies, even if we show up above them on the list. We're a pretty stable entity at this point. Not to say I didn't get a kick out of seeing our numbers getting better at a pretty rapid clip, even knowing more detail about what our traffic actually looks like.