How fascinating. At the Greens website:
Sign up for email notifications about when political blogs mention our MPs names and Green issues! These timely notifications will enable you to respond quickly enough to be among the first commenters, ensuring high visibility for our views and perspectives.
Personally I find this close to astro-turfing, that fake activism which appears to be grass-roots but is centrally arranged.
I welcome commenters of all persuasions and we have many Green voters comment here, such as Toad. but I’d rather not have people who don’t normally contribute rush over just to post comments about how great the Greens are or the like. I prefer people to response because they have read something they want to comment on – not because Green HQ has notified them do go and post supportive comments.
UPDATE: A reader has sent me this (since deleted) showing Labour trying to do much the same in 2009 with the Trade Me forums.