Linking to your mainstream sites from your adult sites. Good idea?

[Cleo]

On the test blog that I'm doing I had planned to send it the exit traffic from all my free sites and stuff that is now going to this useless page. On the new stuff I was just going to link to my mainstream blog and then for the old stuff and put a 301 redirect on cleogoodstuff.com.

Now with this thread though it seems that that wouldn't be the best thing to do.

But would linking to my mainstream blog from my adult stuff only hurt this one blog or wound it also affect the links to other mainstream stuff of mine that was linked to from this blog?

I guess what I'm asking is,
Adult Stuff--> Mainstream Blog--> Other mainstream blogs and stuff
So would the Other mainstream blogs and stuff also get hurt or just the first blog?

Since so far my mainstream stuff consists of one blog with zero content and I'm taking forever to do anything with it I guess I have plenty of time to think things through.