A very good and accurate speed test site is http://testmy.net
They will even help you improve your speed through various tweaks.
I'd like to try to get an ACCURATE idea of my download speed. Can anyone recommend test sites they know are reasonably accurate. I've checked several sites and routinely get a spread from about 1.9 Mpbs to 2.9 Mpbs. The ISP advertises "speeds up to 3Mpbs"