If you are looking for your current PageRank and you want to keep monitoring it in the future, you should probably check out the new tool I just found. According to the website, it´s the easiest way to check and monitor your PageRank. It might well be, I haven´t found any better ways.

• Email sent automatically if PageRank™ is updated
• Estimates the value of your website
• Checks if the PageRank™ is fake or valid
• PageRank™ from multiple datacenters
• Checks PageRank™ with and without “www”
• Displays number of backlinks, alexa ranking, and DMOZ links
• Mini buttons to display your PageRank™
• Thumbnail of website
• 100% free!

Visit Smart PageRank.