Just a suggestion Rated 4 out of 5 stars
It looks very cool, here is just a suggestion after having a look on this (I haven't downloaded this yet).
Does this need a tool bar to always show up for it to work? People may not want one more bar to take up their space. If it is so, may be better to have a key shortcut or small icon to call up the tool bar whenever needed...
The idea of splitting the screen for searching is also very attractive. Keep it up.