I recently bought a new domain name and of course, the first thing I did was to link up my new baby from my blogs. What I noticed is that I received an almost instant ping back from blogs that I linked to IN POST while the blogs that I linked to from the sidebar were not picked up yet.. or maybe AT ALL. Anyway, that’s just my little observation.
Perhaps, it is because the blogs that I linked this new domain name from the sidebar are Blogger blogs while those I linked to in post are own hosted blogs where I have a long list of ping services entered in my control panel that caused this almost instant Ping back detection. Blogger does not have this feature, as far as I know, though I have checked the option about Pinging from my Blogger admin page.
Anyway, I am going to try this little experiment a few more times and see what happens and if my deduction is right.