These rules and guidelines are to ensure that nobody abuses either of these features. Please be sure to adhere to these guidelines.
When and where can I select a Best Answer?
If it is a thread that you created, feel free to select whatever answer helped you solve your problem, or the answer that is most appropriate. If it is not a thread that you created, unless the OP explicitly asks you to do so, please leave the selection to the OP or a staff member.
The exception to this is if you come across an old thread (2 months or longer since the last response) that has not had a Best Answer set. In this instance, it is acceptable to select a Best Answer if one is available.
When and where can I remove a Best Answer?
Just like above, if it's your thread, you can do it any time, especially if it was a mistaken selection! If it isn't your thread, you should never remove it unless the OP has requested it. If you feel there is an issue with a Best Answer selection (incorrect information/mistaken selection/abuse of the BA system), please make use of the "Report Abuse" button on the post to alert a moderator to the problem.