Trust points are given by users to users. If a user finds an answer helpful then the poster of the answer enjoys seeing that they were helpful by receiving trust points from other users clicking the [recommend contributor] link.
It would be impossible to say. (See the Related question for a list of contributors who have achieved a minimum of 2,000 trust points.)
Many contributors have zero trust points, so it would be very tedious to find and list them all.
Anyone can edit answers on WikiAnswers. One way to check how legit a question is is by the number of trust points a person has. Below, you will see the contributors name and how many trust points they have.
There are a few reasons for this. The first reason is that their contributions were outstanding to others, and many people who saw this contributor gave them a trust point for their excellent contributions. The other reason is that this person had all of their friends make an account and give them a trust point.
It sort of depends what you mean. You can get trust points from people that you have given them to, but most are given at random and you never have an idea who gives them to you. The people with many trust points that I have given trust points to never knew, unless I told them and then sometimes they would give me one also. The PC answer is that you get trust points from answering questions, But I suspect the greeters get quite a few from the people that are new when they receive a welcome message from the greeters. I know I gave my greeter a trust point even before I gave myself one. However to answer your question you could give trust points to every contributor you see the link for and never get one back. After you have given a trust point to a contributor the link changes to send message because you can only give each contributor a trust once. That is the only way anyone can tell for sure if you gave someone a trust point and only you can see that your link has changed. There are no rules against letting someone know that you gave them a trust point and if you let them know the reason you may find that many people will also give you a trust point back. Some reasons could be I liked your answer to " ??? " question, or I noticed all your contributions to the site, or I noticed ??? about your bio page. That is probably the only method that giving trust points can also get you trust points. Now if you were asking if you need points to be able to give them you don't need any trust points to be able to give hundreds or even thousands. The only thing necessary to give trust points is that you click on the link to recommend contributor.
many contributors right from Planck to Einstein, Bohr,etc. a proper answer has not been given yet by anyone.
As of January 24, 2014, Chris Whitten has 5361 trust points.
Typically, asking for trust points can or is discouraged. Those who earn trust points are for the most part contributing wonderful things to Answers.com which can include, nice, well organized answers. There are MANY WAYS to earn trust points though.
Badges, badges, badges! Those are a big part of the 'rewards' system on WikiAnswers. You can earn them for answering a lot, helping a lot, having many trust points, winning contests, etc. Also, trust points: Those are given by fellow contributors when they liked an answer or think you are doing a great job. You can also be promoted to a new level of community participation, like Special Project Assistant, WikiGuide or Supervisor. If you enter WikiAnswers contests, like the AnswerThons, you can win prizes! It's pretty cool!
There is no limit as to how many trust points a person can earn on WikiAnswers. Currently, the highest number of trust points held by a person on this site is well over 8,000.
Many have.
You can see the number of trust points you have on your profile page. Go to "My profile" and in the Stats box you'll see the number of trust point you have. You can also see the number of trust point any other member has on Answers.com by viewing their profile page. The number of trust points also shows many times next to the username. For example Marcy[1000] means the user Marcy has currently 1000 trust points.