Adult and gaming links negative for page rank?

As the title says, If I put links on my new Forum to Adult and Gaming sites, do you get a negative response from Google.
I think I read someplace that it is negative ie bad page rank from Google, but I see the Likes of DP having them and it dose not seem to have done them any harm.

 

If you put the links in your site, it may not be a problem.But if they have your link then it can be a problem.

 

Yup that true (from my experienced) got backlink from sin city website is terrible for your kinky clean website/blog

 

So what do you say to Adult and Gaming sites, I do not want a link back, thank you any way.

 

So when Piulik says, it may not be a prob, that says to me, it could be a problem

 

It can create problem for your site.

 

I wonder why some gambling and adult sites have a high PR (I think PR 4 is pretty high for a site that google hates)