: This appears to be a date, possibly a model or version number (2010, possibly February).
: Original uploads from 2010 were often low resolution (360p or 480p). "Better" versions usually refer to 720p or 1080p remasters or original source files found in later archives. Completeness heavyonhotties201002addissonqueenairhead better
It acts as a "call and response" for followers to show support for one niche creator over others in the same space. Modern Context: Metadata as Language : This appears to be a date, possibly