SLA stands for The Society for Location Analysis. It is a not-for-profit organisation run by a voluntary committee and funded by Pitney Bowes MapInfo Limited. Its aims are to: * Improve the standing and promote the expertise of site location research. * Support the interests of the site location research community. * Encourage cross-fertilisation of information, techniques and practices (this obviously discounts commercially sensitive information). * Encourage discussions of matters relating to Site Location Research.