Reminds me of a conversation I had with a friend once. The relevant bit went something like:
Him: Ah, the things you don't see running adblock, flashblock, and noscript...
Me: ...Web pages?
I remember in the 90's folks would turn off js regularly. Nowadays, I'm surprised people think to do that if they'd like a web page to run.
nearly every fancy web page has ajax or jquery stuff running on it to make it pretty and fancy. Even the text box for posting on enworld has a js to make it work (which btw, the cursor keeps disappearing on me in IE9).
BoT: I use MSE as well, for over a year. Works great. Less hassle than any other product I've had to work with.