Originally Posted by Rorschach

hmmm

hardlinks
free sites
pic & movie galleries
pic posts
toplists
banner exhanges
link dumps
FFAs
tgp / mgp trading
thunderball / linkex etc
social news posting
social networking spam
blog pings
wiki spam
referrer spam
blog comment spam
rss spam
blog dir/ rss dir submissions
cloaked links from mainstream sites
blog templates with footer links
tube sites with embeddable clips

that should keep you busy for a while