Silvery - 3:28 pm on Jun 28, 2010 (gmt 0) [edited by: inbound at 10:11 pm (utc) on Jun 28, 2010]
Penalizations can occur across an entire region/category of business as Google does its policing. For instance, if listings for a particular service in a particular city have become rife with spam, Google Maps could clean them all up at once.
The prime reason I assumed that you were NOT talking about the 7pack was that you mentioned "blogspot" -- Blogspot blogs typically are not showing up at all in Google Maps nor the associated 7pack.
[edit reason] Removed Specifics/Request for specifics [/edit]
[edited by: inbound at 10:11 pm (utc) on Jun 28, 2010]