Do you link your mainstream sites to your porn sites?
 

And vise versa? Or does google not analyze the content deeply and automatically categorize your mainstream sites as porn? I haven't found anything on this really, so I wanted to see if anyone here has an opinion on it.

While porn people do not mind mainstream, the same does not hold true in reverse.

That's very true, I can understand that. What about throwing links onto a links page and just putting them near the bottom?

Or should I just send the links one way?

No, they are diff worlds.

I link from my mainstream sites, but not to anything too crazy just stuff like "Download Adult DVDs", but I won't link to stuff like "Cum Soaked Anal Explosions". But I don't link to my mainstream stuff, since they've got enough natural inbound links to support them on their own.

I link the high Pr porn sites I have to my mainstream but not the other way, I can't say if it have any result yet..... but i think... hope it has :)

Don't mix money with pleasure. Don't lose traffic to a site that will not make you money from your mainstream visitors. If they want porn they will look for it, and if they don't want it and hit on it you will piss them off.

always keep both seperate.