Purchasing links & other activities which break Google guidelines, can get your site penalized and PageRank dropped.
Question: "I use the Google Toolbar to monitor PageRank. I read on the Internet that it gives old and quite unreliable data. Can I have reliable realtime PageRank information about the sites I administer?"
Matt Cutts: "It's not unreliable, it's just rounded to a 0-10 sort of scale. So there's nothing unreliable about that necessarily."
Question: "And how can I identify causes of a PageRank drop?"
Silviot, Torino, Italy
Matt Cutts: Goes onto explain why it may drop and if you were doing something wrong, how to fix it and make a Reconsideration Request...
This link is Google Help's brief explanation of PageRank...
See Google's view of the importance of a webpage.
"Pause your cursor over the PageRank button to display the importance of the webpage you're viewing, according to Google. Webpages with a higher PageRank are more likely to appear at the top of Google search results."
#gplustips #pagerank #googlepagerank #gplusseo