Think... Facebook, Geekzone, justcommodores.com.au, TheRegister, Telecom, your bank, iTunes, Google, etc.
E: My name is Mauricio and I will give you the exact figure if you can wait 43 seconds.
This is not for anything even remotely scientific, so no harping on about poor methodology please.
Please keep it off topic, and branch out into moaning about people re-using passwords, and how you have one password for all your secure stuff and one for all your insecure stuff.
I'd say mentioning Wheedle would also be worthwhile, so that someone can come along a day later and tell us that Sella already exists and is better, but just needs more support.
I'll kick things off by saying the guy that exposed MSD should be given a knighthood, and that I would vote for Kim Dotcom (for anything at all that he cared to run for).
Vegemite is better than Marmite anyway.