I'm also running a great deal of PbP games (and have been doing so for over a year), and I'll agree with Andrew that occasional NPCing may become necessary if people don't post. I've finally had to institute a policy warning people that their characters would be under DM control if they dropped out of sight without warning.
While glossing over some research can be beneficial, it's kind of core to Call of Cthulhu campaigns. However, when anything begins to bog down a game, it can usually be nudged along by the DM to get the game moving again. I've found this to be true no matter what kind of game you're running.
While glossing over some research can be beneficial, it's kind of core to Call of Cthulhu campaigns. However, when anything begins to bog down a game, it can usually be nudged along by the DM to get the game moving again. I've found this to be true no matter what kind of game you're running.