Tommybs - 3:52 pm on Jun 16, 2011 (gmt 0)
2) Finally: my button points to www.example.com (root), all clicks no matter what page, counts right? I mean those coming from www.example.com/index.htm, or www.example.com/otherpage.htm?
This should be correct.
With regards to point 1. People who click "like" when going to www.facebook.com/example are different "likes" to http://www.example.com or example.something.com
If you want all the likes on www.exmaple.com to actually be for www.facebook.com/example then you need to use the "like box" plugin I sent you above. Otherwise the "like" button across example.com and example.something.com will not be the same. They might all still point to example.com and be linked with that but they wont be linked with the page on facebook.
hope that helps