Please fix the comment spam

The site is nearly unusable with so much spam in comments. Sometimes I find myself reading what appears to be a well thought out comment only to have a shitty spam link at the end (genuine backlink building spam; not a spammy IH'er, at this point I'd prefer a spammy IH'er).

The result of this is I end up not bothering reading comments, and suddenly the value of the community is gone and I come here less and less.