Full user review
"Works great with IE8"
Does what it says. Great if you are posting on forums, etc. as IE does not have a built in spell checker.
Not as easy to use as the built in spell checker Firefox or Chrome.
If you're stuck with IE for whatever reason, this adds the much needed ability to check your spelling. It'd be nice if it automatically put squiggly red lines under the words like the spell checker in Firefox and MS Office, but it's a ton better than copying and pasting text from MS Word to do spell checking (which is what I was doing before).