Actually I do not know about this thing and i do not heard this before but its helpful for me. I will keep this thing in mind for future. Thanks a lot for this.:)
After post reply to this thread, i searched for this and i get an article for panda & penguin update.At there i read,after april 2012 domain parking will affect badly. Google will not consider this kind of domains for SERP. Below are the words said by Matt Cut,anti-spam dept head in
“... our classifier for parked domains was reading from a couple of files which mistakenly were empty. As a result, we classified some sites as parked when they weren’t.
I apologize for this; it looks like the issue is fixed now, and we’ll look into how to prevent this from happening again.”