ESA continues to post images but NASA isn't??

ESA (image taken yesterday 8/10..poste today)
[link to www.esa.int]

NASA (no images after the 6th)
[link to rosetta.jpl.nasa.gov]


Seems there's some sort of open data policy at NASA that could be at play. I found this data and information policy of theirs regarding NASA's Earth Science program.

It states:
"NASA's Earth Science program was established to use the advanced technology of NASA to understand and protect our home planet by using our view from space to study the Earth system and improve prediction of Earth system change. To meet this challenge, NASA promotes the full and open sharing of all data with the research and applications communities, private industry, academia, and the general public. The greater the availability of the data, the more quickly and effectively the user communities can utilize the information to address basic Earth science questions and provide the basis for developing innovative practical applications to benefit the general public."
[link to science1.nasa.gov]

I realize the policies may have differing charters perhaps but its interesting that the both the ISON observation campaign and now with 67P, amateur astronomers are encouraged to image these comets with the robotic telescopes that K Hall has mentioned.

Why not just post as many images as possible taken by the multi-milliion dollar equipment that US and European citizens paid for and let the amateur astronomers contribute any ideas that way?