okay, updates:
#18 is the purple version
#19 i made the hand cursor looks like more a bar graph
#20 just a normal bar graph
in my opinion, just normal bar graph is not really a fun logo. i mean there's nothing intriguing about it. it has to be modified into something interesting, makes people curious, yet still relevant to the company. an example is logo #19, when you look at it at a glance you will see bar graph, but wait a second it looks like a hand too, with a click on its finger tips,.. oh so this must be a "click". i think it makes people interested.
logo #20 is a good logo but i think #19 is better. but that's just me :), of course you are the client, so it's up to you to decide :)
wolv