After I posted a GPS related post yesterday I am getting a bunch of pingbacks from a group of GPS related sites which appears to be owned by same folks based on the IP address and sites' look. These are sites that just harvest and aggregate posts from the net. What I am finding out their pingbacks are filling up my spambox. And whenever I update my blog i again get these same pingbacks pointing to the same GPS post. As if they are monitoring for any changes to my page.
Can somebody more knowledgable in this pingback mechanics, explain to me what is going on ?
is there a way to blacklist some of the originating sites ? May be I can tell Askimet to drop some of these pingbacks automatically ?