Basic Principle: The Chess.com staff wish to put forth the best possible product.
In general, the actions of the staff can be traced back to the Basic Principle. In this case, the links on the home page are part of the product put forth on chess.com. So the staff, in order to fulfill the Basic Principle, will make someone a "trusted blogger" as long as they believe this person's blog posts contribute to the best possible product chess.com can put forth.
No doubt that if the blogger does anything that is contrary to this goal, the link from the front page could be removed. So there's not a great deal of risk in making someone a trusted blogger if they appear to be writing a good blog. My guess is that it only takes a few good chess content blog posts and to be noticed by the staff. The last bit may involve some luck, or perhaps one could actually make a request (making your own luck, as it were).
This morning I read Anaid's interesting blog post about his meeting with Mikhail Tal. It's a good story and worth reading but I was also interested in a response from Jay who said, I've set you as a trusted user so that any further blogs you write will get featured on our HOME PAGE!.
So I thinks to meself, thinks I, “What's this 'trusted blogger' caper? How does it happen? Who qualifies?”
Trust implies a lot of things:
a belief in the honesty and reliability of others: “I trust this boy comes from a good family.”
expectation: "I trust you will bring my daughter home by midnight."
confidence: " I trust she will be in the same condition then as now.”
a trust: something given into the care of another person: “She's my only daughter. Look after her.”
trust in God: “Please save my daughter from that young man's wandering hands. Amen.”
wishful thinking: “I trust you're going to raise the baby yourself and not depend on your mother and me to do it for you.”
So, Jay, how does one qualify to become a trusted blogger? By years of trustworthy blogging? By sheer luck? By being discovered like a wanna-be movie starlet? Or by avoiding posts like this one?