Here at XavierForum.com we have some user groups (Clubs) to extend your membership with extra features. Most memberships can be purchased using points (and you earn points by posting).

These are the clubs we have:
SEO Club

We also have the following special membership types which all include special benefits:
Gold Member
Silver Member

How to change default group?
Each Club or Membership type (Gold and Silver members) got it's own special rank and in some cases also a special color on the user name. If you're a member of more than one group you can switch default group (the group deciding your special rank and user name color) between the groups where you're a member. This is useful if you want to make your posts stand out from the rest of the members posts

To switch default group to another group, just click on User Control Panel and select "Usergroups". Check the radio button next to the user group you want as you default group and click on "Change default group". Now the selected group is your new default and people will see the rank of that group as your default rank in both the membership list and in your posts (and if the group got a special color your user name will now have changed into that color).