Take a good look at Washtown in Burnet, the oldest sim in Second Life for Firefly-themed roleplay and the last one on the SL mainland, because after being around for over 5 years, it's reportedly going away after this Sunday, March 25. "Owners Anastascia Christiansen and Jadi Goodliffe had made the decision earlier in the evening," the Verse Voice wrote yesterday. "Economic issues have made the town too expensive to maintain as a fuctioning site." Joss Whedon's space Western has a passionate community of SL fans who not only roleplay Firefly in-world, but also have their own blogosphere, and that will continue after Washtown is gone: "The roleplay will wrap up any local storylines before the story moves on to other Firefly sims," notes the Verse.
Click this SLurl to see Burnet on the SL map and teleport in-world if you choose. Though after the 25th, the land will be bereft of Washtown.
Hat tip: Tillery Woodhen, who's had a place there for years.