I just deleted the post not to start a debate, I had one, I didn't mind it because I didn't expect it to give me 5 bars in dead zones
I think it did work a tiny little bit...I don't mind them for $1-$2
By the way, that guys testing is just way too biased. He's using non standard hardware [tracfone prepaids running on 5 year old phones with congested low quality networks? smartphones that aren't typically known for their great receiption]
Do a test with 5 consumer phones [say, V3RAZR, NOKIA 6010, motorola V180, Samsung sch160, sony ericcson t610] on both Cingular and T-Mobile, measure out their reception via service menus at the same time of the day in the same location with only one phone on at a time, do it at a different time of day, same location, then repeat at different locations throughout the week, average out all the values, and then you can say "they don't work"