It's annoying, I always have to get by tits out -_-
But seriously to awnser your questions...
Is your opinion of individuals in the anonymous mass of web users influenced by their gender?
Yes and no, it can help to know someones gemder to see where they're coming from on certain disscusions, bust mostly it doesn't matter.
Do you automatically pay more attention to posts made by members of the opposite sex (or whichever gender it is you're interested in)?
No, almost all post I read and comment on could be done by any sex and I wouldn't know or care.
Do you look for methods to make them pay more attention to you?
Lol, no.
Do you pour scorn on them for chromosomal differences?
No.
Do you take the view that, given the anonymity of the internet, the gender of anyone you're communicating with is largely irrelevant?
It's not irrelevent, it can help to see where they're coming from.