Although AT&T will eventually offer an iPhone tethering plan so that you can use your iPhone's data plan on your laptop (yay!), there's one major catch: They're also planning to charge your an extra $30/month to do it (boo!). That may be worth it if you plan on doing a lot of tethering (and still use under 5GB of data transfer), but if you just need occasional internet access on your laptop and don't feel like ponying up $360 a year to do it, you've got other options. We've looked at several   read more »