Not only that, but 1000 gigs of transfer for $7/month?

There's BS if I ever saw it. That would amount to 3/4 of 1 cent per gigabyte, about 20% of the very lowest bulk bandwidth price from any of the major bandwidth providers. These people are grossly overselling their network, which is probably why they don't allow adult... they know adult webmasters are the only people that would ever use that much bandwidth.