I do try and get all the St. Louis event listed. Many times I grab flyers at other shows. I get a few emailed to me. Most times I scour the web for events. Individual car clubs list their shows on their sites. With my looking there is a great chance I missed something. You can hedge your bets by checking a few other sites. Here are some good ones to check...
John Skinker is a retired fireman and owns a 1924 Model T Roadster. He posts many shows on his website.
The Lakers Car Club has their St. Louis and Southern Illinois Car Shows and Cruise Listing on Hemmings.com has been around well before Area Rides was even first thought of.
The Gateway Camaro Club has more than Camaro shows listed. Not a lot of details, but there are a lot of listings.
If you know of any good resources, please let me know.
If you are planning an event you should submit the information to all of these (including Area Rides).