I get a lot of spam on my site, and most of it makes a sick sort of sense, but tonight I saw something that really made me laugh: "sex-dog-gay".
The point of trackback spam is to create a link with valuable keywords from a highly-ranked site back to whatever site the spam is trying to promote. But... but... sex-dog-gay?!
Whoever sent that spam to my site apparently thinks the phrase captures a valuable niche in the search market, but I have a hard time imagining someone sitting down, surfing to Google, and thinking...
"sex" -- Ok, common enough, maybe too common... I need to narrow it down!
"dog" -- Better, but we're not quite there yet...
"gay" -- Perfect! Now we're in for some good porn!