Google removed PageRank Status from Chrome Web Store temporarily because of Google Single Purpose issue 2 weeks ago. Now, it's available at Chrome Web Store! you can install it from Chrome Web Store.
I renamed PageRank Status to Open SEO Stats, and added two features to the version 8.8:
1. Add sourcecode link in Site Info page.
2. Add IP Whois link in Geo IP section.
If you have any suggestions about this extension, please let me know.