How to distinguish the true and false of PR value

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I made a movie search net on June 14. On the June 24 to check the time. Found PR unexpectedly on the 2. In fact, Google adjusted the algorithm, PR up very simple. I'm sure we all share the same feeling. But we should pay attention to, PR also has true and false.

What is the difference between the true and false PR value? Let me introduce you.

1. Google's snapshot of the Web page and your site is the same. If not, then there is a problem.

2. By viewing its history, these histories are snapshot archives of the Web site. Look at this historical snapshot of this site, if you find a time of the site snapshot into the content of another site, and the subsequent snapshots are so, then the domain name from this time to start the domain. (All some of the PR value is high, is to buy the domain name, and then put a source up.) Such a station to pay special attention to)

3. Reverse link query, you can query the site in any search engine backlinks, if too little of course it means cheating suspicion.

So to remind you to find links and buy links when you need to be vigilant, to find really high-quality links.

My website www.flysou.cn Fly search film and television, also did not connect with other station, also did not buy. PR10 Day is 2. I don't know what the problem is. What insights do you have to learn from each other?