Please edit your profile on this site to include your neopets username, main pet, avatar count, shop size, etc. -- It was required at one time I think until the site was revamped and that info was lost. So -- even if you did it when you signed up (as I did) you need to go back and be sure it's still there.
You wouldn't believe how often I need a persons username to contact them on Neopets and I cannot find them.
Click on "My account" from the top menu that is in blue (yeah, right up there)
Then click on the "edit" tab on the right hand side of your account info. page
Then click on the "Neopets" tab and voila! you can now update your info.
You'll need your password to do this I believe.