ArcGIS Online Map Notes are a great way to collect crowd-sourced information.
ESRI has made some changes to the ArcGIS Online platform. One is an account name change and another is new account option. The ArcGIS Online personal account is now referred to as a public account. Additionally, a new account option has been created; this is referred to as an organization account. This requires a paid for subscription to ArcGIS Online for Organizations.