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care2.com
thepetitionsite.com
takepart.com
kintera.org
idealist.org
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ipetitions.com
dosomething.org
habitat.org
riseup.net
teachforamerica.org
petitiononline.com
changemakers.com
yesmagazine.org
betterplace.org
design21sdn.com
surfrider.org
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grassroots.org
fixmystreet.com
hackersforcharity.org
nationalservice.gov
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transitionnetwork.org
lespetitspoissontrouges.org
amisdelaterre.org
neomansland.info
econo-ecolo.org
sfcg.org
minesandcommunities.org
ioby.org
silentmajorityny.org
nycares.org