And part of the reason is that people don't want to post things too explicitly for fear it will 'kill the deal'.
Back in 2014 to 2015, there were still a lot of arrows and circles on how to MS and where the deals are but starting in 2016, I've not read a lot of these posted in sites like this but there's still plenty being shared via app groups; usually, we read of
gigs that just died from bloggers. Bloggers are usually tipped by their readers and they usually talk about these in private groups where they vet members. Some gold nuggets can be picked from blog discussions and it is up to the reader to follow through.