Forex Peace Army
Even though I believe the guys that run this site have hearts of gold, this site is not entirely immune to abuse by scam artists, but it's still the most honest forex resource on everything from broker ratings, signals service reviews and now even EA forward tests
An EA forward testing site that even runs some real live testing
Global Forex Signals
One of many signals sites, which I have been using for at least two years with a web page scraping EA which works much more reliably than an email reader. I can vouch for the authenticity of their records. Only a very few of the systems are reliable money-spinners long term, though. Global Trader and Pipsrain are excellent.
Regularly delights me with excellent R&D articles on their forum
An excellent news calender, made even more useful because it is available in XML format
Metatrader 4 Experts and Indicators
Probably the most active forex discussion groups around. Has a huge code archive.