Editor for this issue: Dan Parker
<danlinguistlist.org>
We'd like to remind readers that the responses to queries are usually best posted to the individual asking the question. That individual is then strongly encouraged to post a summary to the list. This policy was
instituted to help control the huge volume of mail on LINGUIST; so we would appreciate your cooperating with it whenever it seems appropriate.
In addition to posting a summary, we'd like to remind people that it is usually a good idea to personally thank those individuals who have taken the trouble to respond to the query.
It is rather frequently attested in the Internet, as Google shows, although it seems to be hardly normative. Here this constuction is rejected as ''wrong'': http://www.usingenglish.com/forum/general-language-discussions/432-difference-between-have-had-done-have-done-did.html
Is anything known about socio-linguistic or territorial status of its spread?