I guess the answer to what kind of power users I mean is: all of the above. Our goals are to make it possible to carve very specific searches that minimize the number of false positives you have to sift through, while also making it quick and easy to just sign up for a large number of alerts about everything. These goals actually tend not to be in tension, but we're definitely looking for feedback on how to do both of these better, and to make it easier to manage large numbers of alerts.

Scout is primarily pitched to the audience of people who might love to have a subscription to an expensive pay service on government activity, but don't have the budget. Political intelligence services, such as Bloomberg Government and CQ Roll Call, are extremely lucrative and powerful - to the point that they very nearly became regulated under the STOCK Act (an amendment that removed these regulatory provisions passed near the end of the legislative process).

For more on that: http://sunlightfoundation.com/blog/2012/03/22/stock-act-passes-bill-on-political-intelligence-firms-to-be-introduced/