One resource I use quite a bit is www.findagrave.com. It comes in extremely handy when doing research, especially family histories. I have saved myself a lot of time by searching on findagrave and discovering that someones great grandfather isn't actually buried where they say they were.

I also use www.goodreads.com quite a bit as well. It's fun and it is also great for browsing and finding new titles. It also will give you pretty accurate recommendations if you rate enough books.