My first gmail account was one I sort of intended to switch over to permanently at the time, but I chose firstnamelastname, and as I've detailed here before, it is absolutely
stunning how much crap I get for other people with my same name.* I know Yahoo will continue losing respect as time goes on, just like I audibly laugh at someone with an AOL email address now, so sometime in the next 5 years or so I'll probably start yet another new gmail account with a more distinct version of my name, and switch major personal stuff to that.
*Along these same lines, I was recently instructed to make a website dedicated to my writing separate from my recipe website, except myname.com was already taken, and by someone who also claims to be a writer, no less. This being a major problem from a branding perspective (I am informed,) I instead went with
www.JenniferIsACommonName.com. I thought it was funny, my agent thought it was suitably memorable, my mother and brother think it's completely stupid to the point that my mother is considering reserving the URL of my full name for when I "come to my senses." I think she's always felt insulted that I don't especially like my name.