If you do have unlimited data, then tethering using these apps won't cost extra as far as data usage. There are free and paid versions of the apps, however, so that may be an extra cost. The paid version of East Tether allows for connections to https sites, as well as IM clients and such.
I like that all purchases at TRU were blocked...I worked at a TRU in Austin for three years and always laughed at the kids whose parent's had "okayed" the purchase of the game. If they were available, most times I talked the parent out of getting the game if it was rated M. However, some...