The latest entry in hogwarts_lives explains this in detail but Ill explain too.
Posting news clippings that you find in your own time (without having HUGE polit twists in them you can post them liberally, if there is a big change involved you have to contact us at mionemoony@aol.com for approval) in Tonk's journal. If you take the clipping to Hogwarts on a visit and post it on the main news/club meeting updates/that sort of thing board then you'd post it in the community journal. See? Everyone will see it either way becasue we all read eachother's journals.

Going further, if you post it in your own journal than it is to be assumed that no one else knows that you have read it but if it's posted in a public place than everyone else will know about it anyway.

REALLY though - everyone and their characters will know about it either way! I mean, if you red it you could send the clipping to Dumbledore via owl and he could talk about it at dinner to the students or if you got it out of the daily profit than everyone *assumably* could have read it too. See?

Heh, I'm getting carried away. I think that I'll post this answar-response in the journal for clarification.

:)