I love them. My husband and daughter did one last Sunday and made £80 out of what I thought was total junk.
I prefer to shop at school or village hall car boots where you get a better quality of goods. WE have some wealthy areas here abouts (Uppingham, Oakham, Oundle) where the charity shops and car boots are full of good books, clothes, china and furniture.
The boot sale at the football field is full of videos, moody DVDs, broken toys and old 8 Track players.