Go into User CP -> Edit Your Details and you'll see a field there for your ebay name.. This will only be affect on the new theme, until I've updated the old one. Hopefully that will be within a week.

Currently there are three icons. One that takes you to a sellers items, one that takes you to their feedback, and one that takes you to an ebay page about them.

Which ones do you want to keep? Vote!! You can vote for multiple options, please do.