Users who are not happy because others do not agree or think like them. My tip, learn how Discussions take place in real life... if you can't talk to your neighbor without becoming red in the face then you need some lessons in anger management or self-control.
I am consistently amazed by former Members who deleted their own account or were deleted and revisit here over and over again. In some cases they even Register under a different account or as someone else - who are they fooling? It is sad that they have not realized that to come good and straight forward is the best way. The underhanded stuff will just get you capped!
Users who say they read the rules before joining but then don't follow them ... Why?
"I didn't think you really meant it when the rules said:
... To use proper spelling and grammar
... Stay on topic and be constructive
... No links/spamming… "
Etc. Etc. Etc.
The kind of User who skips ALL the Register pages that clearly state what you have to do only to Post an Introduction wondering what to do.
The kind of user who claims to be an Admin of thousands of Members, but thinks to fool us by coming here to 'get away from it all'. If I want to get away from it all I go spend time with my family, not go to another Forum!
The kind of user that pushes themselves and their opinions on you as though from their constant repetition it will somehow make you 'break'. These types are really 'young' in internet communications and best yet they are really ignorant as to how this Community is managed.
On a positive note...
The kind of user that adjusts himself to the Community and becomes an integral part of it. These are hard to find, but worth 1000 joining Members who have nothing of real substance to add.