My company has a homegrown A-B testing platform. Without getting too far into the technical details, the process typically occurred as follows: A business unit would suggest a performance increasing hypothesis to the statistical analyst ("let's change the font size from 12 to 14, I bet that'll increase conversions"), who would clarify the hypothesis into a statistically correct terms ("let's set 1% of our traffic to size 14 font and segment the resulting revenue this way") and submit a ticket to the engineering team, who would set up the test using XML, then ran a script that would convert that XML into MySQL insert statements, which populated a table that the web application would read from.
Then we had layoffs and engineers were canned. To mitigate some of the work for the engineering team's now reduced staff, I gave all the analysts the necessary permissions to set up and execute the XML -> MySQL translation themselves. On the one hand, they appreciate the direct control. On the other hand, they've fucked up production more than once with malformed XML and the like, which is something they never had to worry about before, which in turn has caused huge headaches for my team.
Is this 'shadow work'? All I know is that my company used to employ more people, and both engineers and analysts were happier. Now nobody is happy, even if the productivity per person is higher, except maybe our executives who have squeezed out more productivity out of fewer employees.
Hmm, maybe I should see what those OWS guys are babbling about after all.