What are the SOS Jewels and how do you become a Senior Member vs a Member or Junior Member? Is it based on number of posts?

Thanks! :)

Junior Member is under 25 posts, member is 25 to 100 posts(I think!), senior member is above that.

Jewel subscriptions are a paid membership. You get a larger signature, more PM's, a larger point allowance,ads turned off, and can change your user title once a month for no charge. You can find more about it in your usercp, under paid subscriptions