You can use all of the features of Espra Trustmap by following @trustmap and then either tweeting to @trustmap or sending @trustmap a direct message. You use exactly the same syntax as you would using it through the web.
You can choose to send a reply to @trustmap, or send a direct message to the trustmap user. Either way, you'll get a direct message in reply, which is why you need to follow @trustmap. It should take, on average, around 30 seconds for your tweets to be processed and show up in your trust data.
Then imagine I see him making a complete fool of himself on the dancefloor:
Now when I query my trustmap for @tav:
I'll get a tweet back listing #nightlife but not #dancing.
The best way to learn Espra Trustmap is simply to use it. Login to Twitter and try sending @trustmap a message. If you're not sure of the syntax, you can see the details here. If you have any problems or have any questions, please just let us know and we'll be very happy to try and help.