All sites rely upon some third party analytics software to track at the very least the number of visitors to a site. Many sites use Google Analytics, which provide much more information that just the number of visitors. Another option that some of the bigger sites use is Adobe Analytics, aka SiteCatalyst to enable more custom tracking options that are not evident through the Google Analytics interface.
One feature of SiteCatalyst is that it allows you to set an option
<a href="http://url.com">Link</a> hyperlinks. Once they are intercepted, SiteCatalyst sends its tracking information to its servers and then procedes to attempt to make sure that the link functions properly. Unfortunately, in some versions of the SiteCatalyst code, it attempts to create a synthetic click event that works in many cases. However, if you are using Safari with the popup blocker turned on, and a
target="_blank" in the hyperlink, then it will trigger the popup blocker, which simply ignores the click, and the user sees nothing happen at all. In order to fix it, hopefully the latest version of the SiteCatalyst code will handle it, turn off
useForcedLinkTracking, or, as the very last resort, convert the