When I click on a link nothing happens! Phone Books
When you click on a link, it should open in a new browser window (except for some very old browsers).
This is so you can look at multiple directories without having to keep pressing back to get here - just close each directory window when you've finished with it.
However, some "pop up stopper" programs that are designed to stop pop-up ads get confused, thinking the new page is an ad. It's a bug in the programs - they will have a similar problem on many sites.
So, if this is a problem for you, turn off the pop-up stopper program, or use any option it has to override the blocker - on some programs for example press Ctrl while clicking on the link. There are no pop-up ads here.