Foxmarks, one of my favorite Firefox add-on suggestions for bookmark syncing and backup, is changing names today.  Foxmarks is becoming Xmarks.  (Waits for the “X marks the spot jokes)  The new Xmarks service looks to be more geared towards sharing links, ala Stumble Upon and Digg. 

Why make the move?  Well, one would guess that sharing links might be a more profitable business model, more so than bookmark syncing alone.  Via the Xmarks blog, here are some FAQs for those of you who might have questions about the change:

• Xmarks is a superset of Foxmarks – it adds web discovery features to our world-class bookmark sync.
• If you choose to upgrade to Xmarks, it will work seamlessly with your existing Foxmarks account and will sync with your other computers running Foxmarks.
• Foxmarks.com and our existing Foxmarks add-ons won’t change overnight. We expect to have upgrades to all three Foxmarks versions available by the end of March and we’ll provide you with more detailed info once we return from the DEMO conference.
• We’re still hard at work finding better, faster ways to sync more things in your browser.

So what new features will be brought on with the new business model?

Smarter Search – In your Google search results, Xmarks will highlight the top three sites based on bookmarking history.  Put your mouse over the special icon to the side of the search results to learn more information such as reviews, and rankings.

Site Info Lookup – Clicking on the Xmarks logo in your location bar will bring up a detailed box letting you know more information about the site you are on, and help you discover other sites just like it.

Then of course, you have the bookmark and password backup and syncing capabilities that Foxmarks already brought to the table.  The Xmarks browser add-on is Firefox only right now, but they promise to have Internet Explorer and Safari versions running soon.  Firefox fans can grab the Xmarks add-on here to try it out.  It is worth pointing out that you can install Xmarks even if you have the Foxmarks add-on installed on your computer. Xmarks will upgrade your current Foxmarks add-on and continue to sync and back up your bookmarks (and optionally passwords).

So what do you think about the change?  Excited about the new features, or disappointed that an old Firefox friend is changing its ways?