Note: This is a different question to Are answers ever deleted permanently?
I just hit 10k rep on Pro Webmasters and as I browsed around the site tonight, I saw multiple spam answers (just links to another site). I've seen plenty on Stack Overflow too (although I don't visit there as often these days).
Shouldn't all these spam posts be permanently deleted, or at least the links removed? Just seeing them on the site is pretty annoying to me. Due to nofollow spammers don't stand to gain "link juice" from them, but they do gain visibility. By my calculation, 2,000 SO users have over 10k rep, and that's increasing all the time.
If over 2,000 Stack Overflow users can see spam posts, haven't the spammers essentially accomplished their goal?