you can find somethink in
http://www.epinions.com/content_27048644228
http://www.epinions.com/pr-Tamron_Zoom_Telephoto_AF_70-300mm_f_4_0-5_6_LD_Macro_Autofocus_Lens_for_Canon_EOS/display_~reviews
I want to by it too, but I want to be shure that it is better than my sigma 28-300 which I dont like very much.
I have a canon digital rebel and I was ready to buy the canon 70-200 f4 zoom lens after much review, and lay out 500 plus, but the sales clerk at B&H talked me into this Tamron 700-300 macro zoom lens. He said that it was excellent quality. I figued if he ws talking me out of the Canon, which was 400 more, he must be right. I can not find any reviews about it online. Does anyone have this lens? Like or dislike? It feels a little heavy.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic