As far as I can see, all he has to offer are brilliant redescriptions of the past, supplemented by helpful hints on how to avoid being trapped by old historiographical assumptions. These hints consist largely of saying: "do not look for progress or meaning in history; do not see the history of a given activity, of any segment of culture, as the development of rationality or of freedom; do not use any philosophical vocabulary to characterize the essence of such activity or the goal it serves; do not assume that the way this activity is presently conducted gives any clue to the goals it served in the past."Philosopher Roger Scruton argued that Foucault was a "fraud" because he exploited known difficulties of philosophy in order to "disguise unexamined premises as hard-won conclusions"...
On knowledge sharing and dissemination
... when circulating a working paper for comments, never put on "citations only permitted with the permission of author"
or "no parts of this paper can be used without permission of author". Rather, say "when using parts of this paper please give proper citation and help yourself". Be delighted if someone wants to quote you ... (p.7)
Source: Glaser, B. G. (2006) The roots of grounded theory. The Grounded Theory Review, 5(2/3), 1-10.