Well, it looks like T-Mobile has some good news and some bad news for customers using its 5GB webConnect data plan. The good news is that the carrier will no longer be charging its $0.20 per megabyte overage fee for any data used beyond the 5GB limit, thereby effectively making the 5GB plan an unlimited plan. The bad news is that in place of an overage charge, it will be implementing bandwidth throttling on any data used on top of the standard 5GB, although it's not saying exactly how much it will slow things down. Customers using T-Mobile's basic 200MB monthly plan aren't left out of the changes either -- while they won't see any bandwidth throttling, they will see their overage charges cut in half from $0.20 to $0.10 per megabyte. Both changes are apparently effective immediately.