What you're referring to is probably editors and it takes 2000 rep to become an editor. if the user is a few 100 rep, he's just a user that has to go through a review process before his/her edits are approved.

For all privileges and the rep they need look here

I'm not a moderator: moderators have a diamond next to their name like

• this one
• here
• here as well

What it takes to become a mod is: Being elected.

There are also rep whores very high rep users like this one that just want to be a user and do not want to be a mod.

What you're referring to is probably editors and it takes 2000 rep to become an editor.

On the main site, if the user is a few 100 rep, he's just a user that has to go through a review process before his/her edits are approved.

On Meta, only 2000 rep users can edit as per Zanna in the comments.

For all privileges and the rep they need look here

I'm not a moderator: moderators have a diamond next to their name like

• this one
• here
• here as well

What it takes to become a mod is: Being elected.

There are also rep whores very high rep users like this one that just want to be a user and do not want to be a mod.