Simplify the following text for a Grade 11 native English-speaking person.
Original: They are usually one or more from among the following : Vandalism , sockpuppetry , edit warring , violating the three-revert rule , spamming , editing with a conflict of interest or having a prohibited username .
Simplified: They are usually one or more from among the following : Vandalism , sockpuppetry , spamming or having a bad username .