What is your motive for using VPN, to hide your identity on this forum and do something bad?
What about privacy, which is what they're intended for? Everyone needs to stop this "nothing to hide, nothing to fear" narrative. Everyone has the right to privacy. Not to mention they make insecure networks usable.
Good news for you is that you risk nothing by using VPNs/Tor as far as Bitcointalk goes, so if that's the only thing holding you back, you can go crazy and run them simultaneously all you want.