It appears that people have now figured out that they can spam del.icio.us tags. I won’t point you to the specific example, but be aware that it’s happening. People put the site they want to spam on del.icio.us with every tag they can think of, most not related, and it shows up on my RSS feeds from the tags I’m watching.
This sort of thing is why I’ve really begun to hate advertising. I know, I know, it’ll never go away, but it’s not like watching TV — sometimes ads just don’t belong. Del.icio.us is one of those places.