Hello i got some questions 1. If i have website with 4 pagerank and i deleta all website ant create new with the same domain do i still have pagerank 4? 2.Does it what domain for building backlinks ? i mean .info .in .com same index backlinks So sorry for bad english
It will still be a PR2 but when Google reindex the site they will eventually give it a new ranking. So long as all the inbound links remain valid you should be off to a good start.
Dude as you havent changed the domain you will have the same PR but there is chance that your posts may have got backlinks from other sites as you have deleted your posts you may lose the backlinks which may effect your ranking in next PR update...
Yes, off course because it is better to have pagerank because viewer see it as a trusted website and quality information.