Monday, 9th June 2008
OS OpenSpace from Ordnance Survey (via) Ordinance Survey now provide a free JavaScript mapping API for “non-commercial purposes” by “private individuals”. The maps look incredibly detailed, although I can’t find any live API demos on the site (the documentation is illustrated with screenshots).
The X-Robots-Tag HTTP header. News to me, but both Google and Yahoo! have supported it since last year. You can add per-page robots exclusion rules in HTTP headers instead of using meta tags, and Google’s version supports unavailable_after which is handy for content with a known limited shelf-life.
Ordnance Survey OpenSpace Demo (via) Niall Kennedy threw a demo up on his site—the map seems to load a lot faster than Google Maps and the level of detail once you zoom down to street level is really impressive.