Actually, let me raise one caveat -- asking a journalist what their "angle" is might not always be the greatest idea. Especially if you use that word.
The underlying idea is a good one, but "What's you angle" -- those words -- can come off as hostile. It's kind of a cliche question that we associate with the sleaziest of PR people. It seems to say "Hey, I know you're a hack looking for spin -- what kind of spin are you looking for?"
Every good story needs a fresh perspective on whatever topic, and if you help lead us to one we will be grateful. An "angle," though -- maybe it's just me, but that word makes my toes curl.
You can read "Chapter Zero" here --
http://codingplaces.net/en/chapter0