Oo how fun and great idea - I am trying to get my head around the whole social media thing and aside from few attempts on FB am useless. I don't usually know what to say on these things but am willing to try .
I shall log on and give you a follow as well - I am @londondollymum. No clue on this whole URL thing either.. twitter has a very good "getting started" page which may help out all us newbies. Excuse the length of the link:
http://support.twitter.com/groups/31-tw ... ng-twitter