geonames_api is a simple, lightweight Ruby client for accessing the GeoNames API. This client does not implement the entire API, but the interface is easy to extend.
ClimaCell has announced the launch of its Micro Weather API which provides hyper-local historical and real-time weather data. The API returns weather data requests such as real-time weather, short-term forecast (nowcast), heatmap tiled image, and a rectangular grid of weather details.
As the various offerings by mapping API providers continue to mature, new opportunities have emerged for would-be advertisers and map mashup developers to tap into the ability to include advertising directly on a map. In addition to providing a wealth of information and spatial context, mapping APIs have the potential to serve as an additional venue for advertising.