Played around with it, quite cool but I am having issues with the tables. They don't seem to have distinguishable borders and are acting strange (cannot tell whether I am adding columns, issues deleting them, and a few other things).

I'll be keeping it added to chrome and experimenting though, seems like a really nice idea. Would be cool to not have to sign into an account though.

Edit: I changed my mind on reflection, I really would only want to use this if I have the option to store the data locally or at least export it.