... I really had no idea where to post this O.o
But thought it was an interesting enough site to post a recomendation about it^.^

MyAnimelist.net

This site lets you make a profile and keep an organized list of every anime and manga that you've ever seen, lets you rate them^.^ You can make an easy "To watch list" too^.^ It even calculates how many hours/days you've wasted of your life watching animeXD
Example profile
Example List

It has good anime reveiws for pretty much everything~ and if you look up an anime it gives you links to other anime that are similar and may intrest you~   and gives the average score of the anime by all users, a convenient way to find new anime to watch^.^
Example anime

If you like more involved sites it also lets you make blogs, anime related fan clubs, forums ect ect...
If you go to other user pages it will tell you how many anime you have in common, and how compatible your anime intrests are based on what you scored them.

<.< some of the news section, and reviews are taken from anime news networkXD But its much easier to find things on this site in my oppinion^.^

... I'm not sure how usefull this site is for others O.o
But I thought it was nice because I constantly misplace my "to watch lists"XD

The only negative is its a bit time consuming if you've watched alot to fill in every single oneXD