Good Taste

In episode #222 "Art is Shipping", Scott Hanselman interviews Jin Yang, the lead designer for StackOverflow.
In this podcast Jin Yang mentions a couple things that I found really interesting:
The first was that a well designed site should evoke a feeling from it's users.
I had never considered this, but it makes a lot of sense. Imagine you have a site where you want your users to donate money for some worthy cause, you might design the site to evoke a feeling of compassion so that your visitors will be inclined to donate more.
The second was that good taste can be developed.
This got me to thinking "what is good taste?".  According to Immanuel Kant, it comes down to a judgement based on a subjective feeling. Well, if that's the case, how do you get better at it?

Scott links a number of design blogs in the notes for the show, perhaps the anwer is to check out the blogs, see what others are doing, and take from that the things that appeal to you.
I've found that I'm a big fan of minimalist art, a style that Apple has been really good at.

What do you guys think? What is good taste and how do you recognize it?