Here is my previous post on digipaks: http://geogamm111.blogspot.com/2011/12/gg-codes-and-conventions-of-digipaks.html
The five bands I chose to look at were:
My first observation clearly showed that on all digipaks the song titles were presented on the back, although none of them had song length included. I also noticed that all of them consisted of barcodes, record label logo's and website information. These were always presented at the bottom of the pack.
Another observation showed that predominantly the front covers were plain and lacking any creative imagery (apart from The Libertines). They mainly consisted of the band name, and a single image or design. The 'Arctic Monkeys' case only consists of an image and nothing else, they rely heavily on advertisement of the image.
Finally, I noticed that inside all of the digipaks they consisted of a booklet. Inside it mainly had the lyrics to all the songs and some band information. Also it had imagery of behind the scenes and artistic design work.