is there a tool similar to yahoo site explorer which lists the links to a site but sorts the results by quality of the backlink using factors such as PR, domain age, etc?
Am using one of three softwares which is working fine with me, WebCEO - SEO Elite - IBP and you can just use Google to find any of them, WebCEO is free to use and it's pretty nice.
I have used both of em and both of em are good. They will pull up the result and you can sort it on various factors like PR and all.