Parent; Engineer; Hiker/MTB; Mapillary contributor.

The-more-you-know links:
OSM Advanced Editing
Good mapping practices
Mapping natural features
OSM History
OSM History viewer
Best of OSM

Български източници:
КАИС
Защитени природни обекти - envgis.eea.government.bg
Търговски регистър - papagal
ЕКАТТЕ - kik-info, ekatte.com

My activities:
My OSM Stats profile
My OSMCha recent changes
HOT Tasking Manager profile
Osmose Stats

Fun:
Show me the way; Bulgaria only; Custom
OSM Fight
List of OSM-based services