1) Excessive Pop-ups: Although I have a browser with built in pop-up control and don't see the pop-ups, I know they are there, according to the "blocked pop-ups" indicator in the lower right hand corner, it has blocked 27 in the past half hour from those various sites.
2)Background Music: Another bad idea in my opinion for personal websites. If I want to hear music, I'll turn on my stereo, or go to a music site. Most of the time, those people who embed music into their page have it at too high a decible level, and it nearly blasts me out of my chair!
And, the sites with BOTH are a double threat!