You don't have to use att for your packets to travel over their network, they are one of the largest backbone providers in the states. I'm not saying the NSA is gonna be after you, but after they perform some data analysis, whats to prevent them from tracking every connection made to rollitup.org and logging the ip. Nothing really, it's just computing power and I know they just love spending tax payer money on more computing power.
I'm not saying they are going to come after your little grow op for 6 plants, I don't think the feds get involved till you have over 100 plants. But whats to stop them from sending a tip to your local police and they put a watch on you, they check through your garbage (this happened to a friend) find a couple stems and the next thing you know they are breaking down your door. In the case of my friend, he wasn't a dealer or a grower, he was a small time schwag smoker but they still busted his door down. It all started from a bunk tip that someone said he was a coke dealer.
Don't underestimate local cops on a power trip. It's better to cover your ass as best you can, the more trails you leave the easier it is to make a case against you.
That being said, I've had tor installed for years, I don't use it when I come post here unless I need to post a pic, then I use tor and a bugmenot account.
Does riu have https?