Karl's following
- Addy Osmaniaddyosmani
- Safia Abdallacaptainsafia
- Daniel Lo NigroDaniel15
- yandiracdeltas
- Emily Xieemilyxxie
- Evan Wallaceevanw
- dangaearon
- Kyle Simpsongetify
- Kerrykerrylin974
- laanwj
- Siraj RavalllSourcell
- Luke Edwardslukeed
- Mathias Bynensmathiasbynens
- Mitchell Hashimotomitchellh
- TJ Holowaychuktj
- vbuterin
- Yangshun Tayyangshun