There are two old sayings that I've come to live by regarding trust...

In God we trust, everyone else needs data.

I can see that Steve supports this one based on the fact that he double checks Paul Randal's and, presumably everyone else's answers.

When trying to gain someone's trust, you have to follow Andy Warren's advice and follow through with what you say you will do which leads to my second old saying:

Let your yes be yes and your no be no.