Links from external pages in stats

[tcady]

I keep seeing in my stats (AWSTATS) under the table showing me links in form external pages, wierd pages that I knwo do not have alink to me...how is that?
Here is an example: this is in my log:
Links from an external page (other web sites except search engines) - Full list
- http://www.inthemix.com.au/forum/showthread.php
- it reports 16 times someone came from there, but that page doest exist - here's anopther - http://zonnet.vinden.nl and http://172.22.1.43/wbsb1.asp
and
http://www.natureetdecouvertes.com
These sites do not pertian to my product nor is there a link on them to me, how is it getting in my stats? Any ideas?