Host Your Own GSM Web Access

For use by those with a GSM handset and plan that is not unlimited.
With a GSM kit, provide a cell site that provides web access.  Can be used in low mobile-coverage areas of the US or via voip gateway in unserved areas on south america / world.  The web browsing via cellphone could be useful where high speed internet is not deployed - avoids putting in wimax with residential device (put in gsm tower and resident already has their device or can buy a mifi device).

Free - slow, replace ads on websites and in-app.  Intercept web searches to our search engine.
Pay grade low - medium speed, unlimited usage.  Intercept web searches to our search engine.
Pay grade high - fast speed, unlimited usage.  No intercept.  Free outgoing calls (w/ google voice or viatalk).

Device:
"The devices essentially spoof a legitimate GSM tower..."
"...costs only about $1,500, as opposed to several hundreds of thousands for professional products. Most of the price is for the laptop he used to operate the system."
"...only 2G GSM calls, making AT&T and T-Mobile calls, which use GSM, vulnerable..."
"The system captures only outbound calls. Inbound calls would go directly to voicemail..."
"...could also capture phones using 3G by sending out jamming noise to block 3G. Phones would then switch to 2G and hook up with his rogue tower."

Asterisk Connecting to the Cellular Network
Also has many vendor links.

How to affordably get US/world frequencies?

Possibly sell/rent this system, with wifi pay per month and GSM pay per month, to trailer parks.
_________________________________________________________
On free cell site, for incoming/outgoing call, before connecting put a few second ad "this call sponsored by x".

_________________________________________________________
Cost to manufacture "GSM Box".   Selling price points?  Cost would depend on radio capabilities.
_________________________________________________________
Can CDMA be licensed/bought affordably to include in a "Cell Site In A Box"?