Let's invent a currency.
We'll call it Credibility Dollars, CD$, and it represents the credibility of your taste and recommendations.
Each time you recommend something to someone, you're risking a little bit of your CD$.
It's an investment.
If they like your recommendation, people being to trust you. You get your investment of CD$ returned, plus some extra. Great success.
Lead friends to a crappy show, however, and you don't get any CD$ back and you've wasted that investment.
How selective are you when spending your credibility?
In the last month, have you gained or lost credibility?