I don't snoop, never seen the point. Either you trust someone or you don't. If you don't you either have good reason or you're too insecure to tell the difference.
what if you acknowledge you're insecure, aren't sure whether you can trust your partner but you're not ready to leave them? if you're willing to be a little pathetic then it seems an ok justification. i haven't been in that situation so i don't know how compelled a person might be to seek the truth.
my policy is total honesty, i tell my gf absolutely everything so that anything she might tell me is pale in comparison. that's not something you can do with every gf though, it takes a lot of time. you probably wanna trust them before you can implement that policy, unless you're proud of everything you've ever done.
maybe the poll would be more useful if it had more options
1. yeah and we're still together
2. yeah and when he/she found out it really damaged the relationship
3. yeah and i would never have known what a bastard/bitch i was dating otherwise
4. no i think its pathetic
5. no but i would
5. no i've never needed to