Gmail addresses
Good grief. For years I suspected that GMail wasn’t processing addresses correctly – I never looked into it because I rarely used my GMail account.
Now that I’m using my Gmail account regularly I thought I’d better work out what’s going on – it turns out that GMail ignores dots in usernames:
http://mail.google.com/support/bin/answer.py?hl=en&answer=10313
e.g. john.smith@gmail.com == johnsmith@gmail.com == j.o.h.n.s.m.i.t.h@gmail.com
Well that clears that up!