It seams to me that the automatic reminder service is really the big advantage of signing up for another online service instead of storing your warranty information in say, Evernote or Springpad which do not provide this reminder service.

I also like that i can upload photos of my stuff along with the receipts and other info (for insurance purposes)

If you check our there site you will see they have a unique medical reminder site for lifesaving medicines called http://www.medielephant.com
if you had a relative who needs lifesaving medication you will appreciate that as well.