This means that the site has an insufficient balance to pay out it's users. I dunno, combined with their extended Super Week-Long Bonus, and upping their discount of blocks from 35% to 65%, I would say the end of this site is near. How does a site that has so many investments have an insufficient balance? Probably because there are no more new investors to help pay back the original ones.
Generally speaking, when HYIP's start offering a lot of specials and bonuses, that's the time to run. That usually means that their time to squeeze the last few bitcoins out of of unsuspecting new members (and get just a bit more from their existing investors) before they abandon the site.
Hope you guys didn't invest here!