First of all, thanks for this useful plugin.
My question is when you want to search something in taxonomy, you have to write some letters capitalized. This is the part: http://rachelcarden.com/wp-content/uploads/2012/02/screenshot-4.png
For example, when i wrote İstanbul instead of Adam İ letter must be capitalized. Because when i wrote istanbul system can’t find anything. There is no such problem with normal wordpress tags. Same thing in when i wrote şehir, Ş letter must be capitalized. I’m using your plugin in Turkish language so there will be problem in İ-i, I-ı, O-ö, Ş-ş, U-ü letters.
I hope there will be a fix.