So, the question already on this Stack Exchange site says that it's OK to ask jailbreaking-related questions - as long as it doesn't violate piracy laws or suggest a criminal offence.
TL;DR: Jail-breaking or 'hacking' a product is not considered illegal, since you are the rightful owner of the device and may do with it whatever you see fit - however it does void your warranty and is not suggested by Apple Inc.
Anyway, if you refer to this question about jaibreaking, it's quite obvious that it's about the Apple product you are hacking.
But - is asking a question about a tool used for jailbreaking (such as the recent and first iOS6+ jailbreak tool evasi0n) allowed? Furthermore, if you are using Linux or Windows as the tool's host - is it still on-topic or a place for L&U or StackOverflow (etc.)?