Links from random sites: Disavow?

[inhouseseo]

I am looking at the links to my site from GWT. I see a bunch of random sites I've never heard of. I never made an effort to get links from these sites.

Sites like

| http://www.xlx.pl |

Also found one porn site!

Should I just ignore these or disavow them?

[polarking]

There was a similar question posted earlier. Go down to the Question "Unknown Links" and someone left a great answer