I usually don't hold back on revealing what I know. Why because if you wait too long the info may become public and you can't take credit for it.
Ex. When I made the post about Xepoleas 2 days ago you looked at her TRN profile and didn't see any schools listed and asked if I was sure about Purdue. Today on her profile Purdue is now listed. So if I had waited just 2 more days to post, that info would have been made public and I couldn't take credit for it. You have to call it before it goes public to claim credit for breaking the news.