neighbours. This may occur intentionally or inadvertently through loosely run organizations. As a result, many microfinance initiatives require a large amount of social capital or trust in order to work effectively. The ability of poorer people to save may also fluctuate over time as unexpected costs may take priority which could result in them being able to save little or nothing some weeks. Rates of inflation may cause funds to lose their value, thus financially harming the saver and not benefiting the collector. While the success of the Grameen Bank (which now serves over 7 million poor Bangladeshi women) has inspired the world, it has proved difficult to replicate this success. In nations with lower population densities, meeting the operating costs of a retail branch by serving nearby customers has proven considerably more challenging. Hans Dieter Seibel, board member of the European Microfinance Platform, is in favour of the group model. This particular model (used by many Microfinance institutions) makes financial sense, he says, because it reduces transaction costs. Microfinance programmes also need to be based on local funds. Microfinance standards and principles Poor people borrow from informal moneylenders and save with informal collectors. They receive loans and grants from charities. They buy insurance from state-owned companies. They receive funds transfers through formal or informal remittance networks. It is not easy to distinguish microfinance from similar activities. It could be claimed that a government that orders state banks to open deposit accounts for poor consumers, or a moneylender that engages in usury, or a charity that runs a heifer pool are engaged in microfinance. Ensuring financial services to poor people is best done by expanding the number of financial institutions available to them, as well as by strengthening the capacity of those institutions. In recent years there has also been increasing emphasis on expanding the diversity of institutions, since different institutions serve different needs. Some principles that summarize a century and a half of development practice were encapsulated in 2004 by CGAP and endorsed by the Group of Eight leaders at the G8 Summit on 10 June 2004: Poor people need not just loans but also savings, insurance and money transfer services. Microfinance must be useful to poor households: helping them raise income, build up assets and/or cushion themselves against external shocks. "Microfinance can pay for itself." Subsidies from donors and government are scarce and uncertain and so, to reach