Backlink Building aids

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What's the overall opinion of tools such as this?

http://www commentkahuna com/

Is it worth bothering with at all or does it have nasty habits like
using IE instead of my default Firefox browser?

Does anyone have any experience with it?

Thanks
- --
http://blog.peculiarplace.com
http://blog.peculiarplace.com/2008/0...minon-message-
sender-released/
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