That's very common here. I'll usually have it in waves: I post on internets state, some criticism, sysadmins take a lunch break and my post is voted up, then

That's very common here. I'll usually have it in waves: I post on internets state, some criticism, sysadmins take a lunch break and my post is voted up, then front end guys go out for a coffee and that's reverted, when startup founders start midnight hacking it's flagged etc. :) this is annoying, though I do understand that the comments that one disagree seem more likely to be spammish to them, and that this instinct is hard to overcome.