If you want to target a particular sellers auctions you can do so in two ways, firstly by keyword which shows items matching the keyword for that seller, for example:
auctionads_ad_kw = “userid:digitalquill widgets”;
Or To display random listings from all auctions by a seller you can use:
auctionads_ad_kw = “seller:digitalquill”;
If there are no results for that seller in either cases the system will show auctions from other sellers instead.
Another useful tip found on the AuctionAds blog.
