For business model, the company plans to add affiliate links for purchasing music or merchandise or tickets.

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Ganxy also makes money through the affiliate links to retail sites that are embedded in the showcase.

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Schwartz sees three ways the company can make money (contingent, of course, on users trying the app out and sticking with it): the company will roll out premium versions with enterprise tools in several months, as well as affiliate links that will allow users to buy tickets to movies and sports games from within their events stream.

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One fast-growing grassroots organisation is Working America, an affiliate of the AFL-CIO which links union members and non-union workers to campaign for better jobs, higher standards in education and, above all, health-care reform. (Any progress on this front under the Obama administration will be claimed as a success by both AFL-CIO and the breakaway coalition led by Mr Stern.) Moreover, grassroots union activism in several swing states helped Mr Obama to victory.

ECONOMIST: Unions

Wikets, backed by Battery Ventures and Andreessen Horowitz, takes the affiliate fees it gets for people purchasing via its links and turns those into rewards for top recommenders.

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Book links direct to Amazon page, not an affiliate link.

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