Lord of the Rings
Counil-of-Elrond~ This site is great. I confess, I frequent the message board there daily, if I've time.
Online Games
Neopets~ Yes, I play it. It's a tad addicting. If you're at all interested in playing (I like building up my shop and playing the stock market, myself), give it a try! For those who don't know, it's a website where you can raise virtual pets, among other things.
Surveys
Make money! Seriously.~ Not tons, true. But who knows?
Video Games
Serebii.Net~ A very comprehensive site on everything there is about pokemon. All videogames, anime, manga, card games, etc. Summaries, character bios, new of upcoming, pictures, info on current Japanese and English, etc. Pokedexes, Guides to seriously everything about raising and battling pokemon, secrets, etc. I've found it very helpful while I've been playing sapphire.