Delete Tumblr unused accounts

More and more people are joining our fabulous community: Tumblr.
And some people aren't using their blogs anymore, since 2 or maybe 3 years.

Therefore, I suggest that we all sign this petition to delete these accounts, so that other people who really want to invest themselves in Tumblr can do it, with a nice URL. Here's an example: http://fairies.tumblr.com/  : i mean, this URL is so awesome, and it is clear that the person isn't using it anymore… Think about it: do you prefer having a good URL so that more people can follow you and enjoy your blog or do you prefer having a horrible URL just because a person created their Tumblr before you, even if they don't use it anymore ?