Blockstack.org has defined a nice decentralized profile system. It defines a zone file to look up the profile data. It is defined in their white paper and on some articles. Look for Blockchain Naming System (BNS)
The user can choose where the data is stored, i.e. it is decentralized, better protected against single point of failure. What happens if the eostitan servers fail? The zone file is small and is store on chain.
Looks like an interesting project, but from what I understand it doesn't tie EOS accounts to profiles, so it's not quite covering the same ground. We'll hopefully move storage to IPFS before long, but for now all data can be freely downloaded by the community, and resurrected in the event of a significant server failure.