Green Thumb.
Any badge you earn on WikiAnswers will replace your contributor badge, as your new badges will show you are a contributor.
Acquiring a Contributor Title or badge
Yes, you lose the Bronze Contributor badge on WikiAnswers when you reach 5,000 contributions. Then, after 5,000 contributions, you become a Silver Contributor, which is a good sign that tells you that you have been working hard and now you get a new reward for it all.
Yes, the WikiAnswers mentor badge design was slightly changed due to feedback from a contributor.
The easiest badge to get is the Contributor badge, which will automatically appear on your profile after you have made 1 contribution.
Yes, all users, regardless if they're a supervisor or not, will have a contributor level badge. This could be a contributor, bronze, silver, gold, platinum, double platinum, or ruby level badge.
Community Assistant is a hard badge to earn but the hardest would depend on your interests. To be a Community Assistant, you must work for WikiAnswers (Real Job) Otherwise, the Ruby Contributor badge is really hard to achieve.
There are badges on WikiAnswers because each badge symbolizes the work one particular contributor has put into WikiAnswers. The more badges, the more associated that particular contributor is with programs of and with WikiAnswers. For example, a Supervisor (category or floating) badge shows that a person is dedicated to patrolling WikiAnswers for vandals and what is out of place and what shouldn't be on WikiAnswers. Another example would be the SPA (Special Project Assistant) badge, which shows that this particular contributor helps with small projects around WikiAnswers to make it better that most contributors are to busy to take care of completely. Basically, the badges show the dedication and time a particular user has put into making WikiAnswers a better website. See the link below.
Maybe If a majority of the users gets above that rank.
You just ask or answer a question, and you automatically become a contributor. If you mean how do you get the badge that says "contributor," you have to sign up for the site. Any registered user who hasn't moved on to a different badge will have the contributor badge.
It could be that you are not logged in. When you ask a question on WikiAnswers, you do receive a "contribution" credit, the total of which is shown on the bio page of registered users. However, you will not appear on the "Contributor" tab of the Question History page. This currently displays the same edit info as below the answer window. You have to click "view complete history" which takes you to the History tab to the left! (After 500 contributions, you get the Bronze Contributor badge in place of the contributor badge. And you get a different badge as you reach higher levels.)
It should only take 1 contribution to get that orange "Contributor" badge on your Answers.com profile.You will sport that badge until you reach 500 contributions (such as answers, edits, asking questions, and categorizing questions), at which stage you will achieve the Bronze contributor level.(For information about badges for the various contributor levels, see the Related question.)