For those of you who think this costs something: the $6.99 price is for an additional year of domain registration that is added to whatever time remains at godaddy. If you were going to renew your domains at some point anyway, it's essentially free.
I will have no downtime since my DNS is not at godaddy. If you use godaddy DNS see http://www.namecheap.com/support/knowledgebase/article.aspx/...
I don't know for sure that namecheap is the world's best registrar, but I decided not to overthink it, since if choosing a registrar were really such a key decision I wouldn't have stayed at godaddy for years. And with transfer being so easy I don't expect there to be a problem if I decide to move elsewhere later. In the meantime I'm supporting the EFF and exercising meaningful opposition to SOPA.