Equinux (http://www.equinux.com) has released iSale 5.6, the latest version of the eBay auction tool. Users can now invite Facebook friends to check out ongoing auctions. Version 5.6 also takes into account recent changes to eBay.

iSale 5.6 helps users take advantage of their social networks. With its one of a kind Facebook integration, iSale users can inform friends about running auctions by posting a note on their wall. Next to the image iSale also includes a direct link to the auction. In order to get a better picture of buyers, iSale also uses Google Maps to show where in the world they are located and eases up the whole after sales management when an auction is finished.

Version 5.6 now supports online storage accounts of two or more gigabytes with Google's free Picasa Web Album photo service. All thumbnails images now appear in the correct size in auctions when using the eBay picture service.

iSale 5.6 costs US$39.95, though it's a free update for registered users of version 5.x. Upgrades from previous versions to 5.x are $19.95.

iSale is Universal Binary so runs natively on both PowerPC and Intel Macs. It requires Mac OS X 10.4 or higher.