I know I can get the PR of a domain url by calculating its checksum. Is there any way to check the PR of a random url under the domain?
oh,It's really easy.there are many tools that can check any url's PR,try SeoQuake if you are using Firefox,the plugin can display every url you are visiting with PR.
You can simply install a plugin like 'Searchstatus' in your firefox browser and get the PR of any page you visit... instantly in your toolbar! Regards, RightMan