Of course it is fun to follow your friend on Twitter and find out where she is drinking coffee at that very moment. And yes it is also fun to read that she has been standing in line for more than 3 hours to buy one of the H&M Comme des Garçon collectors items. But would it be dramatic if you didn’t know? Not really, right? Let alone world changing.

There are, however, Twitter conversation that do matter, that really want to change something for a better world. Rhesa, for example, from San Francisco, explores ways of creating new channels of capital to fund innovation and creativity in undeserved communities. You can follow how her updates @persistance

And then there is Stacey Monk, from Satellite Beach in Florida, founder of Epicchange.org. Stacey twitters about how her organisation helps people in need share their "epic", yet true stories in innovative, creative and profitable ways so as to help them acquire the financial resources they need to create positive "change" in their communities. You can follow her @StaceyMonk.

Start twittering for a better world.

This article was written by Petra Kroon, a social entrepreneur. In 2006 she founded GoedfGeefs, an organisation that helps social entrepreneurs achieve social change.  As a journalist for over 20 years, she will be writing about social entrepreneurs all over the world at TheNextWomen. Petra Kroon is also member of the board of CSR Chicks, a network of women who are closely interested in or closely in Corporate Social Responsibility.