It would be great if there was a very basic web site that could guide you to the most suitable storage solution based on the problem you are working on. Sorta like a guide or wizard.

I think it's a shame that the movement is called NoSQL because it sorta creates this false dichotomy that the field of web data storage is divided in two camps. In reality, you need to, as always, pick the right solution for the problem you are facing. NoSQL databases will never entirely replace SQL databases and I think it's important to not shoehorn NoSQL in places where it doesn't really belong.