Post message: email@example.comIf you want to go ahead and subscribe, feel free. You can subscribe even if you don't want to participate, though I think anyone can read the postings even without subscribing.
Someone also suggested a cog sci wiki, which I think would be an excellent idea if we could get other cognitive scientists to participate, but I don't know if it's very practical right now. However, I do highly recommend the MIT Encyclopedia of the Cognitive Sciences. All of the entries were written by experts, and contain great references. It used to be available for free on the internet, but when they finally got around to publishing it in book form, they made the online version subscription only. The book is not cheap, either, at $68. So you may want to just ask me, or someone else in the field, if you have questions about specific topics or concepts. If I don't feel qualified to answer, then I'll know someone who is.