I use dvdaficionado.

They are the easiest and best looking (a collection page wise).

Profilier is messy and I don't really care about looking at back cover. Who really cares?

Dvdaficionado also allows you to add a title to their databases. Although you have to be very specific about the title, but I have successfully added three titles: Madagascar Skin, The Corndog Man, and Classic Jack.

I know this is a DVD forum but does anyone know of an online CD collection tracker similar to DVD Aficionado or DVD Profiler ??

I'm currently enjoying http://rateyourmusic.com/