Positivs can be left for something as simple as "This user seems smart"
Merely being smart doesn't make someone unlikely to scam so that's probably not a good reason for a positive rating.
Being smart just makes one a more dangerous scammer if they are a scammer..
I don't think its a great reason either but seems widely accepted, such as the ones Nulli has received and brags about..
Remember Robertt?
https://bitcointalk.org/index.php?action=profile;u=704654Overly smart acting, seemingly well intentioned, and overly ambitious newbies, are dangerous..