Can do three things in one mail :
1/ satisfy the requirement that as a newly registered member I post at least once;
2/ mention that the log-in screen had my user name pre-completed, which then needs to be replaced with the e-mail address;
3/ if the password is sent in clear type in an e-mail (mine wasn't on 17 Feb 2014) then it would be sensible to mention using a one-time simple password on the signing-up page?
As an afterthought : some forums have a "tell us about yourself" section where, when satisfying the initial post rule I can also let other forum members know a bit about me, my publication, and use of Scribus. The My Profile section is a bit sparse in this respect, beyond the obvious contact methods : allow me to add which other software is used, give some background?