Restrict Newbie from Posting until they contribute

Currently anyone can create a bogus account and begin posting comments to the polls and news items immediately.

We, loyal Care2 members, would like to see the rules changed so that at least 20 butterflies or 10 petitions need to be signed before someone qualifies to post comments. Answering the polls can be for everyone but posting comments should only be for those who contribute to the site.

This would stop people from creating bogus accounts just to post comments.