Last night I was in one of my blogs when I noticed that somehow, it had developed a bunch of weird ass characters. ie, at the end of every sentence, where I previously had a double space, there was now an Â.
Since it's my oldest blog, the idea of dealing with that all manually was pretty daunting. I ended up finding this search & replace plugin that works great, and thought I would share.
http://wordpress.org/extend/plugins/search-and-replace/