This is the Userpage policy. All users must follow these guidelines for their userpage and subpages.
Backgrounds on userpages should have <span class="userBGImage"> and </span> on the left and right of the background code respectively.
Embedded players and YouTube videos are allowed to autoplay, but must not be hidden from view. A pause button must be present and easily visible at the top of the page.
Users have free reign to post what they would like on their userpage so long as it is not in violation of any other policies. Everybody has opinions, but if these opinions are deemed offensive to others, the userpage in question may be edited, locked, or deleted without warning. Editing other users userpages should not be done unless permission has been given, such as "friend lists", or for maintenance reasons. Any edits done to another users userpage without permission will be seen as vandalism, this also counts to edits done to your userpage while not logged in.
Unless a user has been renamed a userpage should link directly to the user in question. There should be no redirects to any other page on any user profiles.
Users can edit their userpages as often as they like, but should not do it so often that it becomes an annoyance to other users. An example of this is if the user makes numerous edits (such as 10-20) within a short period of time, which hinders Special:RecentChanges and Special:WikiActivity.