bandwidth will be exactly the same as dat size ))))
you upload it in 4shared.com or rapidshare and bandwidth is not your problem ))
I can host it if you wish on my godaddy account. It have 100Gb monthly traffic and I barely use 1Gb.
news is a gas for internet. there should be a 2-3 news post monthly.
Updates are welcome but too many updates (often trivial news) may bring some in the short run but in the long run, may be ignored. Personally, I didn't care too much for the Colbert number update (was there a change in new users or an increase in work done?) but events such as a new dat would do the trick (at least semi-annually or quarterly).