Now you can, and now everybody should be happy. Simply look for the new option on the options page in UserCP. Set new posts searches to include Sub-Talk to "yes" and you'll see new threads and posts from Sub-Talk and subforums of Sub-Talk when you click "New Posts". This will also make it so Sub-Talk posts show up in the "Latest Posts" box on the main page. This should make things easier to see new stuff in Sub-Talk for those who like making posts that don't count towards their post counts.