100 in 100 Challenge - Get 100 new paid users in 100 days
#buildinpublic - Discover what people are building in public
GrowthList - A crowd-sourced list of growth hacks
Open Makers - Open Makers is a community for those of you who are "building in public" and want to share your maker journey.
Astramind for Makers - Astramind is a platform where makers build in public and engage with potential customers, fellow makers.
FIRST - Post a date, pick a winner & meet up.