There is a sticky thread in "the lounge" for things like Craigslist/eBay tips. Occasionally we have to remind people of that.
Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com
Here's the thread for tips about interesting items for sale--