I though OP_RETURN looks something like this: https://blockchain.info/address/1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
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Public Note: I don't know if someone try to express love with blockchain, if not i'll be first. I love you very much P., you are my litte sweetheart 
As I mentioned you, avowal will be available as long as is bitcoin blockchain. Thank you Satoshi !
As I mentioned you, avowal will be available as long as is bitcoin blockchain. Thank you Satoshi !That's a service provided by a centralised entity that has nothing to do with OP_RETURN or the blockchain itself. When blockchain.info disappears, all those messages will disappear as well.
@OP: if you're interested in this stealth stuff, what about STFWing first and asking your questions afterwards?