I've used gmail for sometime and really like it for subscribing to the genealogy mailing lists that I am on. The messages stay threaded in the display which saves space and makes deleting topics I am not interested in. And having a "permanent" email address is really nice--especially one separate from my "other" email address.
I'd encourage anyone who didn't have a gmail address to get one. Or at least get an account at yahoo or hotmail to handle your genealogy mail.