This is probably of interest to many here: Cognitive Sciences Stack Exchange.

For those who aren't in the know, the Stack Exchange family of forums is a set of sites where users may post questions and answers. They are divided by subject matter, each trying to collect a community of experts who can collectively answer any well-defined question relating to the domain. The about Stack Exchange page boasts that 90% of questions get great answers, "often stunningly quickly". Probably the most famous SE site is Stack Overflow, the computer programming site that started it all.

I find the creation of a Cogsci SE to be quite exciting, as it seems like it could quickly become an invaluable resource for anyone interested in the subject matter. I encourage people to take a look and contribute if they can, or lurk if they can't - there are a number of interesting questions and answers already. (For instance, I found this answer about biofeedback quite interesting.) I already contributed one answer myself.

In addition to helping contribute to an improved understanding of cognitive science, this might also be a good opportunity for LWers to make a bit of a name for themselves among net-savvy cogsci academics. No idea if that's actually useful, but it might be a bit of a pleasant ego boost if you don't have anything better to do with your time. ;-)