I think in general that TFP is a very open and accepting place to views on every topic on every end of the spectrum. But as you said, nothing is perfect. Are there some here who are open to discussions about/using/involving a Christian (specifically Judeo-Christian as you mentioned) worldview? Of course. Are there some who will have a strongly negative attitue towards it regardless of any good points being made, or simply ignore it? Of course. Like any large community of diverse people there are going to be diverse opinions, and some more strong than others.
There is the fact that this is a board that is for adults only and has adult content. Now this isn't the sole focus of the board, but it is present. It could be a factor that might keep those with more conservative worldviews away, but I don't believe it's forced down anyone throats that in order to be a member here one must love porn and obsess over sex.
For the most part it is restricted to certain forums which one could easily choose to ignore if they didn't want to take part in it. So I think it's very possible to still be active on the forum without participating in the more "adult" features.
So, yes, there are obstecles such as adult themes and potential negativity from other members that a Christian who holds a more conservative Judeo-Christian worldview might have to overcome. But I think if they were willing to get past these things, they could have a very rewarding and comfortable membership here.
As for myself, I grew up in an *incredibly* conservative Protestant family. I'm currently a Religious Studies minor and I'm always seeking to learn more about spirituality and to futher my personal gorwth in that area. As such I am now considerably more liberal than anyone in my family, but I still consider myself highly spiritual/religious depending on how you define it. There are discussions here which challenge you to really look at what you believe and why and I think those discussions would be equally meaningful to someone who is on the conservative end of religious thought.