In game newspaper - Tribune Style.

[Leowilde]

It would also display some fun random information, like player who killed the most marmots this week. The title would read "Marmot population on the decline" or something interesting, and you could see some fun random statistics on your server.

Yes! XD And that would be one more little goal for players, to get in the statistics of the newspaper.

As for players to post ads, it would be a great feature, given that someone filters the ads before they are published.
And to post Lodestone information like that ingame is a brilliant idea.