I'm the commish this year of a League that is ALL First Timers (except me.), and the Cafe will absolutely be one of the resources I'll encourage them to use. I want their first year in FF to be a positive experience (gotta hook 'em before you can reel 'em in.) and as FF sites go the Cafe is, IMO, unparalleled.
Of course, this is with family and friends, and only for a $50 Grand Prize and a trophy. If I were playing for bigger money I might be a little more hush-hush about this place.
As far as someone in this league using the Cafe to "spy" on any strategies, rankings, etc. I may discuss here, let 'em. H**l, I could very easily be wrong.