Arweave 

I like the idea behind this project. I give to this project 5 starts for technology as I see some problems that they are trying to solve. They propose the permament storage for your data, someone can say that this is impossible and that applications or data cannot be changed, however, I do not see a problem here as people use smart contract with the same logic. As you deploy smart contract the only way how to change it is to add proxy contract before deployment or you just deploy new fixed smart contract. People know it, but it is not the big problem for them to use it. Moreover, they claim that as the storage increases the cost will decrease. It is possible as the amount of data stored in the system increases, the amount of hashing required to achieve consensus decreases, which reduces the cost of data storage. One more problem that this project solves is resistance to censorship; it's a two-way stick, because it allows you to store data that is blocked by the state, such as data about rallies or bribes from the state, but on the other hand it could be some terrorist data. To sum up, I think that technology behind this project is super powerful. Show Less