If you are still wondering whether or not to get a twitter account, visit #queryfail. Initiated by agent Colleen Lindsay of Fineprint Literary Management, agents from different agencies used twitter to post some of the worst lines from queries they have actually received.
Even if you don't learn anything by reading it (and if you are an unpublished writer looking for an agent, try to learn something), reading through the ridiculous and downright peculiar things people have written should brighten your day and hopefully make your own query look a lot more promising.
For more on the agents who were on twitter today visit Colleen Lindsay's Blog.
For myself, I can't wait until they do it again. Even if it did mean that I opened twitter today to find 202 unread messages.