I'll start the show by saying that I enjoy rescues, because frankly recruiting people is a dicey proposition where you're hoping that a group of random applicants will gel into a unified party. In a rescue, you already have the cohesion, and all you need to do is figure out how to progress the game while allowing the players to do what they do best--interact with each other and your creations!
I've rescued three games on Myth-Weavers to date, and I'll do it again if the moment is right.
New Journeys - My first rescue, October 2009. GM was sequentially creating new MW accounts, advertising and recruiting for a game, then disappearing at the end of the line with positively ludricrous excuses. Freeform action in the StarGate 'verse, it's been a rocky road thus far but the players are enjoying it!
Ravenloft: Grim Tide - Rescued December 2009. GM new to the Weave, disappeared after a few hundred posts. Absolutely brilliant players, it's been a complete joy to write with them.
Inauspicious Beginnings - Experienced GM, disappeared suddenly and without warning. Just picked up after a month of their foundering, looking forward to exciting Forgotten Realms action.