The original phase ran from November 2000 to September 2001, identifying and classifying the age of craters on Mars images from Viking Orbiter that had already been analyzed by NASA. The goal was to answer two meta-science questions:
In February 2001 clickworkers started processing new images from Mars Global Surveyor, surveying small craters never before cataloged. Clickworkers also searched Mars images for "honeycomb" terrain, although no further images were discovered and it is suspected that this is an illusory feature type. Their analysis might potentially be useful for scientists, although there are no specific plans for using it yet.
As of 2007[update], new beta tasks were up on the Clickworker site. This time workers were being asked to help catalog Mars landforms in one of two ways. In the first task, high resolution images from the HiRISE camera on the Mars Reconnaissance Orbiter are displayed and the volunteers are to stamp areas on the image with appropriate landform types. The second task took a different approach and displayed wider field views from the older MOC camera on Mars Global Surveyor. The landforms on these wider views were then marked, and interesting features could be tagged for possible future hi-res imaging with HiRISE.
In November 2009 it was announced that NASA has developed a new website to allow volunteer users to help in Martian mapping. The site "Be a Martian" went live on November 17, 2009, and allows users to either map features or count craters on Mars.2 As of March 2020, the "Be a Martian" website appears to be defunct.
Kanefsky, B.; Barlow, N. G.; Gulick, V. C. (2001-03-01). "Can Distributed Volunteers Accomplish Massive Data Analysis Tasks?". Lunar and Planetary Science Conference: 1272. Bibcode:2001LPI....32.1272K. https://ui.adsabs.harvard.edu/abs/2001LPI....32.1272K ↩
"How to explore Mars and have fun". 2009-11-17. Retrieved 2023-07-16. http://news.bbc.co.uk/2/hi/8364865.stm ↩