Hi,
Some ads seem to be more foreground dominant than others so when clicking a link that display a drop down list of further options, the ad covers up half of them which then means I have to refresh the screen to find one that’s less foreground dominant so I can get the option that’s blocked…good for that advertiser, bad for the dominant one…lol. Make of it what you will, just pointing it out. 
If someone has access to the css stylesheet for vbulletin this can be fixed by changing the z-index of the menu items:
Increasing the zindex of drop down menus - vBulletin Community Forum
Thanks for the feedback. We’ll get that fixed shortly. Thanks!
Pipstradamus
Thanks for the tip!
Pipstradamus
This should be fixed. If the overlap comes back anywhere on the website, just let us know. Thanks!
Pipstradamus