Not sure if this fits with the purpose of your page, but there are "easter eggs", like in the "Ask HN: What has HN given you?" thread( which is an awesome read https://news.ycombinator.com/item?id=16409768 )

I noticed a MailGun cofounder mentioning the "HN Cofounder wanted spreadsheet" at https://docs.google.com/spreadsheets/d/1Sygd1fhGYRS-ZvRP0IVV... which is how he ended up involved with MailGun

EDIT:

this probablly isn't suitable for this page. I've started a page to track these things for myself at https://github.com/keithn/HackerNewsCommunity/

If anyone has any other gems that are worth tracking I'd love to know about them.