As far as posting performances, this can be an encouraging or discouraging crowd on a given day..I believe some post out of pride in their accomplishments; occasionally others simply have egos to feed. More still save it for their live audiences, their real target. Like it or not, it's their evaluation that can make or break you.
Personally, there is much to be learned here, but I take no comfort in competing with knowledge or skill levels of others on this forum. Its not what I'm here for.