If we had a filter in the BST forum that would just make things unbelievably easier for both developers and people looking to buy. Especially in the services section. For example when people go to the BST forum or any sub forum they can select from the three. Please do this if it's possible, would be a great addition to the site.
What he said ^_^ But honestly I like the way it's mixed. Most sites have separate sections which gets boring, but having it all mixed is great, especially for people who flip websites, etc.