Hi zishan,

First you must read the site well for which you are exchanging links with. See if the site is a quality site or not. If you feel it is a quality site. You proceed on to link exchange. Then the site must be cached on google if its page rank is unranked. If you have any doubt you can show me the site and i will tell to you. If you got sites please let me know for some quality link exchanges.

Thanks

Leon