I strongly disagree. People will for sure talk about Facebook or Twitter in a century from now. Besides - I truly believe a business is the greatest way of changing the world, not activism. Also, why not both? George Soros (Regardless of your opinion of him) is changing the world by getting the wealth AND THEN doing activism. Being the one fulfilling his orders does not sound fun or interesting - being the one in charge (Soros) sounds fun and interesting.