Solid is a new interesting project backed by famous Tim Berners-Lee. Project is focusing on giving control back to Internet users. Everyone can have his own "container" named POD for data, but data is also interconnected fe. your POD host your images but if someone comments it he hosts his comments, so it seems like a good way of having control but from technical point of view it's not great (one could assume everyone starts to cache data anyway on his side braking Solid principles).

I like main concept of a project, but I'm curious of known drawbacks.

Description from project website: "Solid is an exciting new project led by Prof. Tim Berners-Lee, inventor of the World Wide Web, taking place at MIT. The project aims to radically change the way Web applications work today, resulting in true data ownership as well as improved privacy."

Sources:

https://solid.mit.edu/

https://solid.inrupt.com/how-it-works