updates to BP doc

Hi folks,
I've added the BPs about subsetting and enrichment and issued a pull 
request for those.

I've also gotten to thinking that we ought to have something about the 
duties of reusers of data, as this is also a type of data publishing. So 
I wrote this up as a possible drop-in BP. It's in a separate commit for 
ease of ignoring or merging.

Happy trails!
-Annette


      7.15 Data Re-Use

Re-using data is another way of publishing data. Data re-users have some 
responsibilities that are unique to publishing on the web.This section 
provides advice to be followed by people who re-use data.


*Reuse Data Respectfully*

When reusing data, be considerate of the original publisher. Cite the 
original dataset; give feedback when you find problems; follow licensing 
constraints.

*Why*

Publishers who make data available on the web deserve acknowledgment for 
enabling others to work with it. Citation also maintains provenance and 
helps still others to work with the data. Providing feedback repays the 
publishers for their efforts and allows them to improve the dataset for 
future users. Following licensing constraints shows respect for the 
original publisher’s work and prevents legal entanglements.

*Intended Outcome*

Original publishers should be acknowledged by citation. They should be 
made aware of any known problems with the data. Datasets should not be 
used in violation of licensing agreements.

*Possible Approach to Implementation*

Provide a textual citation of the source in a readily visible area of 
the site in which it is used. Read the original license and be sure that 
you provide any additional acknowledgments required. Follow the 
publisher’s directions for submitting feedback about a dataset if you 
find problems with it.

*Example*: When publishing a visualization based on bus data from our 
fictional transit agency, the re-user could include the text “Data 
Source: MyCity Transport Agency” just beneath the graph and link the 
citation text back to the original source.

*How to Test*

Verify that the original publisher is cited in a readily discoverable 
place. Make sure that the licensing for the original permits the re-use 
to which it is being applied.


*Evidence*

Relevant requirements:: R-TrackDataUsages 
<http://www.w3.org/TR/dwbp-ucr/#R-TrackDataUsage>, R-UsageFeedback 
<http://www.w3.org/TR/dwbp-ucr/#R-UsageFeedback>, R-ProvAvailable 
<http://www.w3.org/TR/dwbp-ucr/#R-ProvAvailable>

*Benefits*

Reuse, Trust, Discoverability


-- 
Annette Greiner
NERSC Data and Analytics Services
Lawrence Berkeley National Laboratory