TOR still claims to be 100% anonymous, and it has it's uses (it's not all buying Russian Hookers and pounds of crack). there was a hack a year or so ago that allowed IP to be traced but it needs to know a few things to do it (the nodes used the end server and the outbound server if I remember correctly), I'm informed (but still not sure I trust him) that this data can be gathered by cookies and I'm sure someone is building a bot to do just that but again, you are plankton, don't give yourself so much credit, the real big fish aren't interested in you, you might get swept up in the net of a trawler but that's about it. physical attack is still far easier than online, especially with RFID and the likes and it's more likely you'll get your details swiped stood on the bus or train than from online purchasing.
It's a new world people, and if you are on here, you most likely aren't part of it, I know I'm not, I'm just an observer now.