Yesterday, I found a great bit of software called Inspyder InSite that will scan an entire website for spelling mistakes. And it was only $59! I've been looking for something like this for a long time and I can highly recommend it.
At the moment, I'm also scanning the teamworkpm.net website and using a global search replace script I made to replace bad spellings across the entire website database. It's embarrassing how many misspellings we had online and it's great to get this fixed.
Only yesterday I was reading on SitePoint how important it is to have zero spelling mistakes for customer confidence.
And It might help our Google ranking to have zero spelling mistakes.