ah, depends..;) I notice silly things, like historical anachronisms, creative spelling (well, they're artists aren't they?..;) ironies, technical details. I'll drop a hint or two here, maybe ideas on scaling, perspective, just obvious stuff. I tend to tease folks a bit, from time to time (who, me?), but it's all in fun. On occasion, where I've been wrong, or percieved that way, I've removed comments as well.
I get the occasional comment, and I can take negative criticism (you can say I suck, but only if you tell me why..;). I have my little 'amen corner', of folks who check my stuff out (a small, but welcome club..;), and aside from 't' (who shall remain nameless, but whose comments either brilliantly celebrate obfuscation, or whose command of the English language should be relieved for insubordination..;), I learn a lot.

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)