as in 2013. For the fifth conference, Geograph members gathered at Peterborough. On the Friday afternoon conference attendees visited a brickworks just outside the city. The conference itself was held at Peterborough Museum and included a talk on the geologist William Smith. Walks around the city centre and local waterways concluded the proceedings. Tools and facilities The site has a number of tools for making use of the photographs. Collectively known as Collections, the site front page now features a Collection of the week. The various techniques include (with examples): Shared Descriptions, a simple method of grouping images by a common topic Articles, a longer text-and-image article by one or more authors Galleries, a forum-like mechanism where people list similar photos Geotrips, where photographs, a GPS track file, and a written description combine to illustrate a day out or an expedition. Contributors can choose to add meta-data to each image, in the form of Subject and Tags, to go along with the geo-tagging by location. All of this allows the use of a Browser to allow the relatively large archive to be searched. There are other methods of search, of course, ranging from Simple text search to tagged searches and complex searches. Because of the geographic indexing of the pictures, it is possible to summon a page for an individual 1-km square. These square pages all provide a /link page which links to internal and external tools, such as a wide range of other mapping sites, and the various national historical artefacts databases. The site has a lot of detailed statistics, but can also create personal profile and personal coverage maps. It started as a game, and many of the tools support personal achievement and goals. Long term archival The site's 5 million plus photographs were selected for long term web archiving by the British Library in their UK Web Archive. Many photographs have been transferred to Wikimedia Commons, and the photos are used in thousands of Wikipedia articles. About 1.8 million photos were transferred to Commons in 2010, but no further bulk transfers have been undertaken. However, tools and advice for transferring are provided for each photo on its re-use page. Sister projects In 2009, a sister project, Geograph Deutschland was launched, covering Germany. Geograph Ireland currently co-exists with Geograph Britain and Ireland, but may split into a separate project. Geograph Channel Islands covers the Channel Islands. Mobile apps