The website is slightly out of date.  The wiki is most up to date.  If you want information directly from the source open the debug window and enter the command "listitem projects" and it will give you the white list of projects approved for Gridcoin.  Also, less work than active hosts means the BOINC project doesn't have enough work to go around.  It is a good idea to add a few projects you want to contribute to, the new magnitude calculation takes the guess work out of choosing which project to contribute to because it is you average contribution across all projects for the entire Gridcoin team.  Just pick a few on the whitelist you like, make sure you have work in your boinc manager and you are working for science, getting rewarded in Gridcoin.