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In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendation.

Source: http://search.twitter.com/search.atom?q=%2B%23roi%2Bsince%3A2009-03-14%2Buntil%3A2009-03-14&rpp=100

  1. <?xml version="1.0" encoding="UTF-8"?><errors>  <error code="64">The Twitter REST API v1 is no longer active. Please migrate to API v1.1. https://dev.twitter.com/docs/api/1.1/overview.</error></errors>
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