Good people across the world have harnessed the power of Twitter to promote causes dear to their hearts both large and small, local, national and international. Although it would be difficult to measure the effect of this there can be no doubt that the combined impact of all those individual Tweets has had a massive impact.

I wanted to celebrate this phenomenon by drawing up a compilation of many of the powerful voices who help to contribute to this force for Social Good in the world. The names are in no particular order, please click on the image to pay them a visit.

Katya Andresen – @katyaN4G

Sean Gardner  – @2morrowknight

Claire Diaz-Ortiz – @Claire

AnnTran – @AnnTran_

Rev Andy Bales – @abales

Scott Harrison – @scottharrison

Alyssa Milano – @Alyssa_Milano

Carol Hink – @CarolHink

Heather Robinson –  @MrsRobinsonNJ

Amanda Hite – @sexythinker

Mark Horvath – @hardlynormal

Meg Garlinghouse – @megarling

Beth Kanter – @kanter

Shaun King – @ShaunKing

See the full list and read the rest of the article at The Top 10 Blog here.