CDJ'er was a site I started in 2010 to help DJs print track lists for their CD booklets. Each CD usually contained about 10 songs, and making a list for each disc was time consuming.
The site allowed DJs to automatically print labels using iTunes playlists or albums and saved a lot of time. I used it, and it was great!
Nowadays, I don't really DJ for fun anymore … and also, most DJs have moved to using USB memory sticks with their Pioneer CDJ decks. So, I figured 2012 was a good time to retire the product. :)
So long, CDJ'er!