Idiot ads
Whilst downloading the newest crossfire client from Sourceforge, I saw an ad which interested me. Not wishing to disrupt what I was doing (and also aware that many ads pop open new windows when followed), I middle-clicked to open a new tab. When I got a moment, I eagerly turned to the tab to see what the ad was selling, only to find that the site had, instead of using nice standard HTML links, done something-or-other which doesn’t play well with others, and so the link never loaded. They had to go above-and-beyond to break things; the easy way is also the correct way. Don’t they want to sell their product?