Can anybody answer this question on Mi Yodeya?
Is it permissible for a Jew to participate in an online religion-related community that is largely made up of Christians? The halachic issues are, I am told, complex and nuanced, and that's even before adding the internet into the mix. (Maybe in-person meetings like local study groups are different from internet-wide discussions that leave a permanent record.) I'd like to see, if not a definitive answer, a summary of the relevant issues (with sources). I've just dropped a bounty on the question. If you can answer this, or share the link with someone who can, I'd appreciate it.