That depends on whether you are a supervisor, a signed in user, or a non-signed in user. Anyone who can edit the wording of a question can trigger a merge *request,* but only supervisors can actually perform a merge. (This is because we get lots of people who don't know how to merge, or who want to merge things that are not the same.)
How: if you can edit the question wording, change it to the same wording as the question you want it to be merged into. If you have the rights, this will ask you if you want to complete a merge. If you do not, this will trigger an email that will be sent, indicating that your username wants to merge these two questions together.
For supervisors, there is also a link that allows you to access an area to do merges another way... that should be covered in supervisor training/mentoring.
If you believe that two questions should be merged, but the recommendation for one did not seem to work, contact any Supervisor or Community Assistant on WikiAnswers. They can merge questions very quickly for you if they are, indeed, similar enough.
Only Supervisors have the ability to merge questions. Non-supervisors who reword questions may trigger a merge that will be sent to a Community Assistant for review. If the two questions should be merged, the CA will merge them.
As a Supervisor, if you merge two answered questions on WikiAnswers, the answers will be placed one below the other on the merged question. Usually a minor edit needs to be done to remove any duplicated information.
If the two questions are nearly identical, either recommend a merge, or ask a Supervisor to merge the questions for you. If the questions are not the same, but have the same answer, it is alright to copy and paste an answer as long as you wrote it. Don't take credit for an answer that you did not write.
The WikiAnswers site does not allow you to have two identical questions. If there are two questions that would have an identical answer, then they should be merged. Only Supervisors have this ability.
It's when two (or more) questions appear to be asking the same thing. They can be 'merged' into one question so they all get answered together.
As a regular member, you can request that the two questions be merged and the supervisor community that handle the merge requests deal with all of them. Regular members cannot merge questions, I'm afraid. However, as a supervisor - we can merge questions to make them one-standing question.
There is no easy way to merge categories at this time. If you think that two categories should be merged, you can write to WikiAnswers @ Answers.com (without spaces) and request it.Another possibility is that you have run into a "mirror" category, where the same category with the exact same questions shows up in two different places within our category tree. We do this sometimes to make them easier to find if they are popular in different areas.
If the correct answer is the same for both, yes.
Many more than two questions can be merged on WikiAnswers. If the same question can be asked in dozens of ways, they all end up as alternates.
Send it to a supervisor. He would be able to revert the wrong answer and add it as an alternate to the correct answer.
There are two people next to the WikiAnswers logo because it shows that any person (like the two random people next to the logo) can go to WikiAnswers and ask and answer questions.