Re: our users want to give points to each other
Peter, you might be interested in Community Currencies (CC) Mod. Learn how to install Mods, and get it from the main repository.
http://tikiwiki.org/mods
http://mods.tikiwiki.org
There is an example on how to install mods on http://edu.tikiwiki.orgexternal link for the AulaWiki Mod (explained in AulaWiki - Workspaces documentation)
HTH