Something to keep in mind, when considering replacing DSL/Cable with your cellular connection, is that the connection will be affected not only by slower bandwidth, but also by latency.
Rather than try to explain, a quick google search results in:
Latency in Networking - Speed and High Latency
The short version:
Bandwidth is the rate of data transfer, latency is the delay between sending from one endpoint, and receiving at the other endpoint.
While the phones today have reasonable bandwidth... their latency is abysmal compared to other home internet solutions.
**IF** all you're going to use the internet connection for is browsing the web, and email... you may be ok, but expect MUCH longer delays when browsing than you're used to.
If you want to use your connection for pretty much anything else, you may start to run into problems. Many applications are sensitive to latency delays, and you could experience issues.
My best suggestion, is to try what they're saying regarding tethering for a significant amount of time BEFORE you give up your home internet connection, so you can see exactly what you're getting yourself into.
Regarding tethering, I see PDANet brought up several times here... but there are other applications that work just as well. Go to appbrain.com, and search for tether. The one I use is
Barnacle Wifi Tether
GL!
