Internal Antenna Booster - does this thing work?

I saw this on Ebay as part of a 'package' - has anyone had experience with this - does it really work? It kinda reminds me of the 'power' antennas you can get for your TV - always picks up better on paper... but it's worth investigating... thanks

Internal Antenna Booster
Reduces Static!
Increases Clarity!
Fewer Dropped Calls!
Greater Reception Radius! (You won't get a signal where your carrier cannot provide reception, but weak signals may be substantially improved.)
This internal Antenna Booster is a passive device (uses no extra power) designed to capture stray radio signals in the body of the phone and re-radiate them to improve you phone's performance!
Now you can use your cell phone in elevators, long-distance car travel, on boats, in the mountains, going through tunnels, inside buildings and more!
It's like having a four foot antenna on your phone!
Works on any mobile phone (analog, digital and tri-band phones), your cordless home phone, pagers, and wireless PDAs!
CE & UL Certified!
Retail Value ($19.99)

That is a complete fraud and waste. Read the following:

http://www.cellantenna.co.uk/internal_c ... ntenna.htm

I sell wireless for a living and we have tried these passive boosters and for the most part they do not work at all. In some cases they seem to reduce the signal on some carriers. I had a lady on Sprint swear by them and tell me she gets a better signal. I held up my Sprint phone, same model as hers and I had 3 bars more signal than she did. It never hurts to try it if its free with a package, just have the GooGone ready to take it off.

I am computer technician with more than 10 years of experience. I have several business phones and specially a pocket PC smart-phone.

This device actually works on all my phones. Here an article with someone that actually did scientific test to prove that it actually works. So don't be fool by the previous post.

Check out the proof here: http://home.pacbell.net/mtom168/antenna/

Don't be afraid to buy it.

It's bougus.

And you, J@v@ (Java?), have only posted once. That means it's your device that you are selling, you probably made the account just to post that.

Maybe I'm wrong. Btt it's suspicious...