Drupal Userpoints module

Drupal Userpoints module is a pretty handy module, which will become really helpful when creating community-powered sites. You may creating a forum with User Karma, you may need to grant points when a user read a posts, your site may need to maintain a internal credit system or even your site has an abstract credit system. Whatever you need to do with points, User points suits to you!

Why say it really suit ?

• It's completely brand-able

Yes. You can completely brand it to suit your needs. "Karma", "Credits","Points", or anything you want; This super-class module intergrates your your 'brand' to all menus, forums, user profiles, and everywhere.

• No more grammar mistakes

You don't say 'points' if you have just one. User points module is intelligent enough to use correct grammar and correct words. You can configure what to show when the user has one point, and what to show when the user has multiple points.

• Points approval

You can configure whether you need to approve points awards, or let module do it automatically.

• Points expiration

Points are expirable if you wish to be. This is useful for credit-like web sites.

• Charge points or award points

You can charge or award a specific amounts of user points for users' actions. This lets you to make some content types are 'expensive'. Ideal for advertising sites, etc

• Setup roles by points

You can use user points to add or remove roles when a user reaches a specific number of user points. This become handy if you need to automate your forum, to add users to a champ-like role. You can even setup e-mails to be sent when the role changes.

• Award/Charge points for posting.

Setup how many points should a user get, upon commenting or posting on nodes. This setting is per node type. You can even limit the user to award only a specific points per a period!

• Integrate in your entire drupal site!

This great module works well with Rules, Voting API and Invite modules. So you can now set custom triggers, actions and conditions using each user's user points. This also works pretty fine with Invite module so user points module works even like an affiliate manager!
Integration with voting API is useful to award points when someone vote the post, or charge points when someone mark the post as bad. Settings are configurable using your fingers.

• Universal tokens

Yes! This module's data can be used in any message which will be shown in your site, or in any e-mail your system sends, or even in any place where tokens are supported!

• User points share

Your users can send or receive points from other members.

• Taxonomy based

You can choose a taxonomy term when awarding/charging user points on each action of user. For an example, you can award points in two separate sections when the user create nodes, and comment on them.

• Addon modules

There are addon modules available to extent user points module's functions, such as user points registration and user points login.

User points module is actively developed by it's maintainers and you don't need to leave this module seeking for more features. User points module is without-doubt the best user rating and credit managing system for Drupal web sites. Go, and add this to your site!