Loving it so far! Nicely done.
The concept makes perfect sense ... to me anyway. Having the 'web apps', with their own unique drop-down context menus only a click of a button away makes for such an awesome alternative to wasting time looking for appropriate links/buttons on websites.
The potential for making a user's web-browsing experience less cluttered and more organised is definintely there.
Looking forward to see where this is at in six months.