 Paradoxically, the growth of the open data movement is paralleled by a rise in intellectual property rights.The philosophy behind open data has been long established (for example in the Mertonian tradition of science), but the term "open data" itself is recent, gaining popularity with the rise of the Internet and World Wide Web and, especially, with the launch of open-data government initiatives such as Data.gov, Data.gov.uk and Data.gov.in.Open data can also be linked data; when it is, it is linked open data.