I've been operating on wikipedia since 2002. Small edits here and there, I only created an account when I felt the need to add pictures.
During the last year I've noticed the alarming increase of a type of user that makes people swear never to use wikipedia again: the rulebook banger. I don't mean a rule nazi that sticks by the rules no matter what. I mean a person who will make it his personal quest to beat you and your edits into the ground because he has some sort of unfulfilled desire in real life. He literally knows all the rules of wikipedia by heart and will use them to enforce his point and his view only disregarding them or brutally enforcing them when it suits his needs. He will say your sources are not valid, remove your images and revert your edits just because it makes him feel important.
This my friends is the rulebook banger and he is the main reason people quit wikipedia.
Tips
Mostly because nobody can memorise all the features of wikipedia
at Display pages with prefix: type the beginning of the article's name into the box and press Go.
You will see a list of all pages that begin with what you typed.
You can reduce the number of articles displayed in this list by typing more of the name and pressing Go again. You can also find Wikipedia users in a similar way by changing the entry in the drop-down box labelled Namespace, from (Article) to User.