For me it's too many advertisements with pop-ups and stuff. I don't mind a few here and there but when they pop up and are in your face it gets a little annoying for me...although I have to admit I haven't seen many that have too many advertisements, but there were a few
Boring name and boring posts. I also hate sites with a million blinkies, especially if their content sucks, and all they post about is wanting more traffic or trying to make money online. I am all about content.
I like organized blogs where the text doesn't over lap. I just left a blog recently because the hyperlinks were overlapping the text and it was too hard to read. I LOVE a playlist as long as it doesn't autostart. I enjoy listening to music as long as I can turn it on and off.
I can't stand music on blogs. Design and clutter I can overlook if the content is great. Too much text turns me off a bit because my time is limited and my attention span is short so, I don't want to feel like I'll need to invest an hour to read something.
Most other things are minor - and if the content is amazing, I don't even notice.
oh boy a lot of folks don't like music. I keep my volume down so it doesn't bother me. I have a short attention span so I like shorter posts. I understand that sometimes they need to be longer. I will say I think your blog is a part of you and just because it isn't appealing to some doesn't mean others won't like it.