I'm pretty new to Ubuntu, and to these forums and one thing that I have found to be a bit disturbing is that other people (including myself which is more oddness) can edit other peoples questions. Is this true? Why? Isn't that a super terrible idea? Not to mention, how is it that I have to have 50 rep to comment on a question but apparently I need 0 rep to edit someone else's question. Doesn't that also seem terribly backwards?
You need a minimum of 1 reputation to suggest an edit. When an edit is suggested, what happens is this:
- it goes into a review queue where it takes 2 trusted community members to agree that it is a good edit. A trusted community member is someone who has managed to earn more than 2,000 reputation (this is not to be confused with the "trusted user" status you can earn at 20,000).
Also, your content here is under a Creative Commons license, so you don't really have a choice. Everyone needs to be able to edit your questions and answers to fulfill the letter of the license. For more information, take a look at the FAQ.
Lastly, edits are designed to be used for the purposes of updating, fixing invalid information, improving formatting for readability - and that is what it is used for.
Some people Downvote for silly reasons, it may be an offhand comment in the question (funny but otherwise not essential to the question) or something else...
By editing we can make it easier to read and less likely to offend, clear up mistakes or parts that people would confuse, like in @jrg's answer http://meta.askubuntu.com/posts/5681/revisions , many times a simple edit can turn around a question, and impact it positively.