Creating content on a wiki can be a highly collaborative exercise that makes us interact with a variety of editors and authors from a wide range of backgrounds. Treating others with respect is key to this kind of authoring.
The wiki has a variety of tools that enable you to gain an overview of what kinds of edits are taking place across the entire wiki or within your own content pages. Checking the Recent Changes page often is a good way to get an overview of where activity is taking place in the wiki in general. To see what individual changes have been made to any page use the history link on that page. The diff function will help you locate these specific changes between versions of the page and if you need you can revert to any version in time. This way any 'vandalism' (although unlikely in WikiEducator) can be quickly removed.