We will unlock the Google+ profile link for all sellers soon. Google will display your Google+ profile picture next to your products on tradebit - that is pretty neat, because it gives you trust with your potential buyers.
In order to add your link to the detail pages, you have to add "www.tradebit.com" to your contribution sites:
Once that is done, you will be able to add your personal link to the admin section on tradebit in the power admin section: here (=only if logged in!).
I urge you to do that, it helps building consumer relations on a different level!