I don’t live in the US, so my ISP doesn’t really seem to care what I torrent, but the megathread vehemently recommends to always use one. Since VPNs aren’t cheap and I’m on a strict budget (wouldn’t pirate otherwise), is it really that dangerous to torrent without one?
For a private tracker no, for public trackers it depends on your country. Some countries the worst you might get is an email or letter in the mail, other countries you will be sued. I even use a VPN for private trackers, let alone public trackers.
I would recommend using a VPN.