This is in my top 5 fav. plugins, which says a lot, considering there are almost 30,000 plugins, and tons of similar (shortcut) plugins.
I just want to notify you that the button in the editor does not show up in TinyMce 4.0, which will be part of WP 3.9 due next month.
I hate to see this awesome plugin become obsolete with WP 3.9.
Keep up the good work - at least from me, thanks a million, you are a rockstar in my book, and the latest update (v.1.7) fixed the tabs problem.