Just hover the mouse over the link; it will show you where you will be taken. Does not work for buttons
The important part is the domain.
When hovering over the link, the last part between 'http://' and the first '/' should be pentaxforums.com
http://www.pentaxforums.com/ and
http://somethingelse.pentaxforums.com/ are OK
http://www.pentaxforums.com.something.else/ is not OK (or at least suspicious)
Hover over the below link
http://www.pentaxforums.com
It reads pentaxforums but clicking takes you to the empty startpage of my website