Sustaining open data business

"I want to illustrate that it is perfectly possible, if not necessary, to support a business publishing open data. Strategies for successful open data companies: [1] Charge for quality – as geonames.org offer a cleaned up better authoritative version of a somewhat crowdsourced database, [2] Charge for high volume – as SimpleGeo offer 10K per day calls to the service and charge a small fee after that. [3] Charge for private data storage – as Talis offer free triplestores for linked open data, and charge for a private data service. [4] Charge for analytical capacity – Fortius One offer the free GeoCommons web map making service and charge for the GeoIQ analysis package...."