As pointed out the providers you ripped off could certainly sue you and they could also make a complaint to your local municipality. It's not the case that people haven't been charged with theft of services over such things.
I suspect the site you got the info from, if in the US, is in bigger trouble. This is a federal crime. I guess they are not in the US and at least pretend not to offer these in the US anymore.
I would recommend that you STOP stealing content and if anybody comes inquiring, refuse to speak to them. If you get a collection notice or the like, write back with the details. To answer your question, if the amounts stolen range above $650, then the Nevada SOL is four years. It's five years on the federal statute.
(I'd insert the Simpson's "So You've Decided to Steal Cable" reference if the forum allowed such).