I love this tool. I discovered it just this past weekend. I tried gliffy, dia, smartdraw, and a few others but finally settled on LucidChart. I used it to make this diagram: <a href="http://ktype.net/wiki/_media/ktype-system.png" rel="nofollow">http://ktype.net/wiki/_media/ktype-system.png</a> for my project <a href="http://ktype.net" rel="nofollow">http://ktype.net</a> - I'm pretty happy with how little time it took me to get it all done.