Things recently noted on the whole writer/agent editor spectrum:

Just because you think you have a novel inside you, doesn't mean you should inflict others with it. (link from Bookninja.)

Want to know how to get an agent to reject you? It's really easy!

Miss Snark is back from vacation and skewering bad opening pages and query letters with hardcore vengeance.

Fellow blogging Agent 007 explains why just getting an agent doesn't guarantee a sale -- especially if said agent is on various editors' blacklists.