Not sure if this is possible but is their any way to add to spell check the main webmaster jargon terms. e.g google, cpc etc. I'm sure pretty much every post contains at least one of these terms and we have to ignore them every time.
There is an old saying, "Our manners do not make us they mearly reveal us." The same is true of our posts. If you are running the Google toolbar, you have a built in spell checker available. Am sure it is not only toolbar that has this option.
Spell checking should be client-side (on your end). Plus, goggle is more of a real word than Google is anyway...