One of my big concerns about toolbars is a company can be clean and high integrity, then get strapped for cash or even just make a bad decision and partner with someone who they think is clean, who later starts injecting badware through the toolbar.
This is one I think is the coolest marketing toolbar around. You won't believe all it does for niche marketers and KW research. Here's a post I did about it.
VRE Toolbar - HOT Niche Marketing Tool