What is it that makes your RPG setting unique? Why should people be interested in your setting, over all of the other ones out there? Sure, you think it is cool to run adventures in "The Land of the Pickle People" or the "Lost Bedrooms" - but why should other GMs or players care? In short - what are the hooks that make your world unique?
I think that it should be possible to expose some of the Really Cool elements of a world within just a few short encounters. Do you have an alien race, school of magic, fantastic setting, flavor of monster or something else that makes your setting unique and fun? If so, write a couple of short encounters describing it.
This is a challenge to all blog writers (old school, new school, etc) who have blogs about Roleplaying Game Settings. And even those who are even vaguely interested in RPGs. Also - it doesn't just have to be a world of your own creation - if you really like Glorantha (for instance) and have been itching to get your players to play Runequest, use this as an excuse to write up some really cool encounters to make them want to play there.
Use this as an excuse to have a Week of Encounters, where you write one encounter (no matter how brief, or how detailed) each day for a week. It gets some really cool content out there on blogs - gives the GMs who are writing about their worlds an excuse for cool content - will generate some great encounters that players will be exposed to - and is a good way to give people an excuse to see what your world is all about.
The Valley of the Old Ones setting described over at the Blog of the same name will be taking up this challenge. I may (if time permits) also do something similar for the Fourteen Suns blog.
Those taking up the challenge, leave a comment with a link to your blog.