I think it's kind of like with resumes and business cards. If you use a template, it's less you. If you design it yourself, it might not look as clean. Personally, I always go for the personal touch, see addumb.com lulz.
I replaced my auto-forwarder to about.me (and later profile.io) with this little piece of self-aggrandizing marketing. It took basically no time, and it feels better to me, but I'd like an outside opinion