I was recently at a forum and saw a post on CheckPageRank.com and how it recently sold for $50,000. If you visit the site now, you will see that the DOMAIN is EXPIRED!
Even though there isn’t a site on the domain anymore, I’m sure it’s still getting a ton of traffic and making GoDaddy.com a few bucks from the ads… after all, it is #1 on Google still for "Check Page Rank". Imagine paying $50,000 for a web site and domain… then forgetting to RENEW! I’ve had problems before with losing domains, but GoDaddy’s automated renewal process makes everything so easy. I can’t imagine what happened!
If you would still like to check your page rank anyway, try some of these:
Live Page Ranke (Recommended – Multiple Server Check)
Google Page Rank Checker
iWebTool Page Rank Checker (checks across multiple datacenters)
Google Page Rank Prediction