IPFS is still in the alpha stages of development, so we’re calling this an experiment for now. It hasn’t replaced our existing site storage (yet). Like with any complex new technology, there’s a lot of improvements to make. But IPFS isn’t vaporware, it works right now. You can try it out on your own computer, and already can use it to help us serve and persist Neocities sites.

Source: HTTP is obsolete. It’s time for the distributed, permanent web