Bad news via Ziki Questi: Venexia (above) and Goatswood, two beautiful and acclaimed MMO roleplay sims owned and managed by the SGS/eDream Factory studio, are going away very soon - June 13 and 19th, respectively. Ziki has all the details and links you need, and notes that waning traffic seems to be the problem:
[O]ver time, the sims have become more and more quiet, to the point where visitors might now find themselves wandering solo. Guests have always been welcomed and provided with a free three-day pass, but perhaps for the casual explorer that very aspect diminished the sims' desirability as places to simply visit.
With less and less active users paying the sim owners to play their MMOs, paying Linden Lab $300 each month for each sim quickly became unsustainable. This is disappointing, because while most sim owners can't afford to keep operating without a revenue model, these two did.
Here's a machinima of Venexia, BTW: