After trying out usernamecheck.com , I decided to try claiming my username "roytang" at various websites. Here's a list of various websites where I have this username.

http://friendfeed.com/roytang - This one actually seems useful.

http://twitter.com/roytang - Okay, I admit it. I've actually had this for a few weeks now.

http://pownce.com/roytang/ - I'm not yet too clear on what it's used for.

http://roytang.posterous.com/ - would be useful if I didn't already have a blog

http://roytang.livejournal.com/ - now I can be emo!

http://roytang.pbwiki.com/ - I created this a long time ago. Recently I had to use pbwiki again so I revived the account.

http://www.last.fm/user/roytang - music I listen to.

http://roytang.wordpress.com/ - As mentioned, I only got this account so I could activate Akismet

There's probably more. Sometimes when I see a random website I try out my username to see if I've registered before and this is successful more often than I expect.

Some "roytang"s on the web that are not me:

http://roytang.blogspot.com - obviously not me

http://www.myspace.com/roytang - some guy from Singapore