Judging a Book by it’s Cover

This is from CBS news:

One interesting thing that I think they left out of the video is that eBooks need covers too. For instance, most eBook publishers have specifics regarding a book cover before you can publish with them, or get added to their premium distributions.  Those covers still help sell the books the same as the covers do on a paper back. Personally, I have no fear that book covers will go away.

What about you? Are you guilty of “judging a book by it’s cover”? How often to you check out  a book (read a sample, click to know more, pick the book up in the store, etc) because the cover appealed to you?