I've seen some posts from the Auctiva folks suggesting possible linkage to more than one account. However, the Account Preferences only show linkage for one, so the praticality might be lacking.
There certainly isn't any restriction for having more than one Auctiva account for each eBay account.
Wouldn't it be intersting to use one Auctiva account to list to multiple eBay accounts / Stores and sync back with one Auctiva Store. Hmmmmm....would that make the Auctiva Store a consolidated Super-Store, ala. A-Mart.
Danno