there are a number of CMS based systems i have used drupal and joomla as well as plone. i have liked them all.
in your case i think a simple "blog" style of entry, main landing page taking about what your core purpose is, then a forum for others to share and integrate.
warning if you set up a forum you will need to police it pretty heavily.
As for the page you are talking about i would shy away form adding that to the site just yet, but instead include a simple donation area. then gather resources related to the core purpose of your site.
I would start with a core purpose and evolve from there.. find out what you want it to do then move in that direction. if you build a user-base ads and the like can help pay for it. but you have to give them something to build credibility. but if you pop up a link offering work from home jobs then ask money for it it will turn people off and make people think its an advertising site from the get rich quick scams.
does that make sense?
i would also consider changing the backgrounds. they make my eyes hurt ;-)
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A mouse trap, placed on top of your alarm clock, will prevent you from rolling over and going back to sleep after you hit the snooze button.
Stephen