inthebitcoin.com – store message in the blockchain

We've developed a simple app to store messages in the bitcoin blockchain.

https://inthebitcoin.com

We are looking for any kind of feedback from bitcoin users. The app encourages users to store a short message in the blockchain about a particular day/occasion. First theme is St. Patrick's Day.

What do you think about the idea, what other features people might be looking for, feedback about the design, the price, anything.

Thanks inthebitcoin team