I use it quite often, but only recently began contributing. And as they (very) wisely say at the bottom of the wiki (https://wiki.openstreetmap.org/wiki/Editing_Standards_and_Conventions ):
WARNING: OpenStreetMap is highly addictive Take frequent breaks, there is a lot to be done.
Just yesterday it requested me to verify my account (with a full UAC dialog) before opening the clock app. I guess it was trying to sync (?) the custom alarms/timers (??) between my devices (???) but... WTF, Microsoft.