This is confusing:<p><pre><code> OPEN INTERNET RESEARCH CHALLENGE
...
Both published and unpublished papers will be accepted.
Published research papers need to have been published
after January 2007. Both published and unpublished papers
are limited to 20 pages (11 point font).
</code></pre>
and...<p><pre><code> ENTER THE RESEARCH CATEGORY
Submissions in the research paper category shall be ...
..
Papers need to have been peer-reviewed by a recognized
scientific conference or journal and must have been
published after January 2007. Papers can be uploaded in
either PDF or Word format. There are no page limits for
research papers.
</code></pre>
EDIT: I presume that it should have been:<p><pre><code> Papers (that have been published) need to have been
peer-reviewed by a recognized[..]</code></pre>
challenge.gov feels like a checkbox that's been preemptively marked, and not a serious tool. The problems are too vague to be acted on, the rewards are small, and the community is anemic despite the potential PR weight of the US gov.