What's the best online dictionary for Spanish and English?

I want something that's easy to search, quick and pretty complete.What's the best online dictionary for Spanish and English?
I'm not sure about Spanish or English dictionaries, but i'm a partner in en101 and en101 is an online language learning centre. With the 1 year package, you can learn 5 different languages - English, Spanish, Russian, Chinese, Latvian.



The price for an account is $129 a year, which is about less than $0.40 a day. Not only you but your friends and family could also log in using your account, at the same time, to learn other languages. And if you introduce someone to use en101, you will get $30 commission.



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http://nicholaswinters.en101.com/web/website/demo.aspx



This is my domain, you can try out the free demo lessons, if you are interested to know more, e-mail me at kaizenebt@yahoo.comWhat's the best online dictionary for Spanish and English?
http://education.yahoo.com/reference/dic鈥?/a>

is great. I've been using it for years.