Once upon a time, with my first mobe a few years ago, I found an option in the settings to refuse all unsolicited SMSs.
It worked rather well, cutting down the pesky buggers to only the operator's "Hello, Welcome" message (funny how operators do not think their trash is like everyone else's trash).
Alas, I had to change phone after a while, and my boss gave me a company phone as well. Neither have the option anymore, and I get a lot more useless messages than before.
I wonder why that option disappeared ? (duh).
I wonder what it would take to get it back ? (something about someplace freezing over, no doubt).

I had an idea of doing this using Bluetooth. As people walked past, or inside a shop, the system would search for bluetooth enabled phones and send them an advert, or info.

This could also be used for shopping centres. If someone has been walking aroud for more than 45 minutes you could target them with a message about tea/coffee/snacks.

If there are some shops looking to promote a sale/new line, then they could have messages sent out at other areas in the shopping center to entice customers to visit their shop.

What do you think? I've got some other ideas like these. Are they just idle daydreams, or potentially worth some money? ;-)

What I hate about targetted advertising is that they go by stuff that you ALREADY OWN. 

What I want is a psychological test that makes a profile that gets stuck on a USB stick, or something.(so you can't be tracked unless you want to be) That way, instead of seeing the latest and greatest, and simply getting what everybody else gets, every once in a while you'll find out about special stuff.

What I want is HDTV glasses with a wireless connection and a 3D desktop that I can control with my hands, rather than a mouse.

I've NEVER seen spam that mentions that. Just a bunch of stuff about Viagra and sex organ enlargement.