Think about this tiny trend in light of the unemployment situation in the USA. I imagine that most if not all of these offers are from people who are employed. What about the 20M (or whatever it is) who are not?
If there was a site where they could volunteer to work for a startups, think of the army of available talent. And these don't need to be tech startups only. If it could be set up so those volunteering could be compensated later that might be good, but even without any promised compensation I bet people would do it.
Does anyone know if such sites exist, sites that easily let startups hook up with volunteers/remote interns?