For online-only collections, lots of people recommend DVDSpot and DVDAficionado. I personally prefer DVDProfiler, which has an offline database and an online website funtionality; however, in the v2 to v3 upgrade, they've severely limited the capabilities of the free version. Still, I've gotten my money's worth out of the registration fee.
Here's my collection, note the tabs at the top for Wishlist. (also note that I don't usually bother with wishlists). http://www.invelos.com/dvdcollection.aspx/dtcarson
dvdaf.com was good....until dvdspot.com came out.....much easier to manage your different collections (BR,Anime,etc.) b/c of the filters on dvdspot.com