Here are some real stories about Google Algorithm.
One guy did some SEO work for an architectural firm in Brisbane, Australia. What he did was added new metatags, created link exchanges with related sites, did resubmission and created one-way links from unrelated sites which have PR3 and PR5 that he managed. Later when he checked, he found there was only 1 or 2 back links to that site, but the site PR went from 0 to 5 and he didn't know how it happened. His client was so delighted with the result. He was really confused about it, because he had no idea how it happened and why it worked so well, and he really want to find out so he can do it again. The site that he was talking about is at www.emailavanet.com.au
Any theories? Is Google playing with our mind?
This story is also familiar with the above. This guy claimed that a few of his client's websites went from PR0 to a PR5 in about 3 months each. He didn't do anything out of the normal, and couldn't seem to replicate it to save his. The sites he had been able to get PR5 for have nothing to do with the Internet. One was for architectural louvers, the other was for Feng Shui. He said "it sucks to see a client's website receive a PR5 after 3 months and receive only a PR4 on my own personal website and blog after 2 and more years". He also said he just got a PR5 for a one page Linux site that he built 7 years ago but he could not even get PR4 for his business site.
Is Google raising the bar for people in the Internet industries? Or is it something to do with competition? The higher the competition, the harder it is to get good PR?
Some said it had something to do with domain age, one was an old domain (5 years plus), the other was only a few months old and some sites get high PR even if it doesn't have many back links.
So maybe it is true that Google is messing with our minds.