David Brock is former partner of James Alefantis, head of Media Matters, and has been implicated by Anon source as a key player, along with John Podesta, as the two key figures in charge of cleanup of all DNC/Clinton messes and evil deeds. In looking for info on Brock, I found this article :

http://www.foxnews.com/politics/2012/02/27/media-matters-boss-paid-former-partner-850g-blackmail-settlement.html

"The Rehoboth Beach home was torn down months after Brock sold it, amid much community opposition, so the buyer could divide the parcel and build two homes. It remains a vacant lot."

After reading it several times, the last part caught by attention.....as if it might be a clue into the "blackmailing" of David Brock by his former, former partner.

I then searched on that and found this article linking the beach house to Madeline McCann:

http://www.rense.com/general96/followmoney.htm "  February 2012: As London Metro Police link Maddie’s disappearance to the USA. Note: this occurred 6 years after Brock took up with Alefantis and 5 years after Maddie disappeared. Brock sold the Rehoboth Beach home to a MacLean, VA, realty, for well more than 1 million dollar, and which immediately tore it down without replacing it with other structures. This had to be Maddie’s home away from home with a lot of little bodies under the floors.   - See more at: http://www.rense.com/general96/followmoney.htm#sthash.pk5dvwX7.dpuf"

I don't know, but I thought it strange that the house was sold and then razed by new owner. Maybe we should find out who bought it.