I'll start with an apology, I haven't visited the site for a year or so - certainly not since the voting system was implemented, so some of my observations are based on my limited browsing of the site since the new season began.
Okay, I'll state my position: I was one of those who originally advocated the introduction of voting. My area of expertise is applying the principles of organisation of social insects and stigmergy to solve engineering problems, (stigmergy is the principle of multiple agents influencing each others behaviour through changes to their environment - if you're interested look at how rock ants collectively evaluate and choose a new nest site
http://www.bristol.ac.uk/news/2009/6292.html). It allows colonies of tens of thousands of insects to coordinate their behaviour, so surely it can be applied to the F1 technical posters.
For those who are yet to be convinced of the utility of a voting system, I think it needs to be clear why we are voting - to highlight informative posts. It should not be based on the user who posted the comment. It is human nature that we are biased. We will occasionally up/down vote posts based on the person posting instead of the content. However this 'noise' in the voting system is drowned out
if enough people vote. So it is crucial that as many people participate in voting as possible so I would suggest giving more people the ability to upvote. It is also vital that people are motivated to vote for the right reasons,
to highlight informative posts.
To this end:
1.Give more users the ability to upvote.
2.Reduce the prominence of the user posting the comment so we concentrate more on the content of the post.
3.Definitely change the +/-1 vote icons. Either replace with text 'informative', 'offtopic' or with lightbulb icon, zzzzz icon.
4.Make the number of votes/day more flexible - allow people to use a percentage (100% ?) of their voting allowance for the next day. Allow users to uncast votes. Anything to make people less cautious about casting a vote without allowing unlimited voting. Do users know how many votes they have left for a given day? If not that needs to be displayed as well.
One last thought. We want to make the site more attractive to browse and highlighting informative content is one way of doing that, encouraging good posts is another. If you accept that argument then we must find a mechanism to identify good content then the voting system allows this decision to be made collectively instead of autocratically. The carrot is a much better motivator than the stick. Give users the incentive to earn reputation points through posting informative posts rather than relying on moderators to police those posts.
I would encourage participation in voting - give the system a chance to mature and re-evaluate in a year's time.