You know what gets my goat, or whatever the words are that a cranky old curmudgeon like Andy Rooney might say?!?
Blog traffic exchange members that include music on their sites without giving visitors a way to TURN THAT CRAP OFF.
If you want my clicks and visits, and want to benefit the most from being a member of a blog traffic exchange service, then keep your tastes in music to yourself, or at least make sure the defaults for visitors isn't 'start playing music as soon as my web page is open'.
Seriously, I've got no issue at all with someone sharing their tastes in music. Heck, it's actually pretty cool to get to see what others are listening to, but DO NOT FORCE IT UPON ME and maybe leave me hating the wait for the countdown timer (or worse for you, make me just click on through to the next site, or even worse for you, make me mark your site as one I will exclude or block for future visits).
I don't want to be a blog snob, and I hate to think I might miss some interesting content that would be on a site I'm skipping by or have blocked, but I am quite serious in suggesting that if you want to benefit from the traffic exchange sites, you should make sure you are NOT annoying potential visitors or making them make use of options that will exclude your site from more members of the surfing community.