It's a cool idea, but we need to think what impact this will have in the future, when the Blockchain grow too big for individuals to run a full Bitcoin node, due to spam.
When they increase the block size, more information will need to travel through the Blockchain and the overhead services like this will add to the blockchain, could put a lot of
strain on the network.
I also has the same filling about the increasing of block chain. It takes a long time to hesitation before publishing this website.
Finally, I think my website can not kill the bitcoin.
Bitcoin has many limitation. The block chain is too big, and increasing day and day. The network can't afford more then 7 transaction per second.
Same like gold, gold is too heavy and too little as a currency, but this limitation can not stop gold becoming the most important Money in
the world.
Same like bitcoin, the big block chain and low transaction speed will make bitcoin into a kind of rarity. It will increase the value of bitcoin.