Probably an odd question, but am I the only one who thinks this would have been a godsend about 10-20 years ago?
I mean, it's useful for some cases now (like as mentioned, non programmers wanting to make more dynamic sites), but back then a lot of cheap/free hosting services didn't support any server side scripting.
Something like this would have let you build an ad hoc CMS on a free hosting service like Geocities. Which would have been pretty useful for the utterly skint.
Now though? It's still useful for some people, and I do think it's something I'll test myself at one point, but I feel the easy access to free/cheap hosting for server side scripts has likely cut down on its usefulness a fair bit.