I tried a couple of searches for my state and city. When I spelled out the state I got a couple of posts, when I put in my city I got my post, which had Columbus Oh. But when I just put in the 2 letter abbrev. for our state OH then I got a message that either the term was too short or there were no posts. So if you are trying to find others in your state or if you want to be found by your state you will need more than the 2 letter postal abbreviation.