What can be done to reduce homelessness?

http://www.urban.org/publications/1000874.html

http://docs.google.com/viewer?a=v&q=cache:ubLdk9ZQxQwJ:www.urban.org/uploadedpdf/end_homelessness.pdf+reduce+homelessness&hl=en&gl=us&pid=bl&srcid=ADGEESj5VsFxc9NEKTUhExFNAqcQL1QxYgN7NVIGC56yd4Qt-_-oMLaCK8z8cAKvRgxycTYgMOf8nwHnREVFNCmpkOvN1vbHTRllrx3ZEw6w-WQZ2I2NvCEa2DpEZeuAc3jMLEMhw4ob&sig=AHIEtbQw-VJdL1YK8-E75cpvRLVyg_UjfQ

http://www.washingtonpost.com/local/fairfax-county-reduced-homelessness-by-16-percent-during-recession/2011/06/17/AGFHu2bH_story.html