Why do you think "upvote conversion rate" is an important metric for anything?
You might enjoy this post by Dave McClure:
http://500hats.typepad.com/500blogs/2007/06/internet-market....
You might enjoy this post by Dave McClure:
http://500hats.typepad.com/500blogs/2007/06/internet-market....
There's data you can use to measure the effectiveness and strength of your company - conversion rates to users and customers, revenue etc. Are you monitoring stuff like that?