I have gotten several panicked IMs from regular visitors of Desperation Isle, asking if the island has been taken offline. Apparently peoples' landmarks to the island have broken- this seems to be an unintended side-effect of a move earlier this week (the isle now rests one map slot East of its previous location).
But no, Desperation Isle and its mall are still very much alive and open to the public. If your landmarks are broken, please use Places Search and look for 'Desperation Isle' (and make sure the Mature checkbox is checked). You can also get there by looking at the Classifieds tab of my profile, or my Picks.
Also, if you haven't heard, within a few weeks we'll be unveiling "New Desperation Isle," a brand new island built from the ground up with our regular guests and shoppers in mind. Check the Desperation Isle Estates blog for details:
http://desperationisle.blogspot.com/