All NASA websites have to be renewed annually in STRAW (System for Tracking and Registering Applications and Websites). If they're not updated, they're supposed to get blocked at the firewall.
Of course, they never define what a 'website' is, so someone could claim that the item in question was a 'web page' that didn't have to be individually registered.
(I made the mistake of listing a webservice as a 'web application', and had much back & forth as I said there weren't any privacy issues ... of course, their definition was that a 'web application' is something that you give logins & passwords to.)
But my complaint was that the 'official' page is that there are other pages out there that are *not* trying to be comprehensive that are doing a better job than the 'official' page. I had contacted the NASA official responsible for data.nasa.gov, and asked him how they had sent out the call for information to put in there ... he said they didn't, they just added websites they found. I told him they'd be more complete if they just linked to the GCMD as their system hardly had anything in it. I also complained about how stuff was organized (not by mission, or investigation ... but by the websites they found ... never mind that a given archive might have hundreds of different heterogeneous datasets.)
And I seriously doubt that the projects are what you claim -- as someone who's tried to push some NASA-funded software to CPAN ... after a while, we gave up as the legal department made it such a burden to do so. (admitedly, this was ~8 years ago).