I have 2 site with 1 years + 2 months old. Both of them has been ranked in top 3 for a year until a week ago. First site with much higher competitor ranking climbed up and steady to #2. The second one with much lower competitor is dropped from #3 --> 4 --> 5 --> 7 --> 8 --> 9!! - Both of them are in the same niche and build link in almost the same way. - Both of their contents update regularly. - They have almost same backlink in numbers and source. I wonder what happening to my second site. My first site have total 86,000 competitors with quote but ranking seems steady. The second site have only 18,000 competitors with quote but ranking is down. The allinanchor is down also from #3 --> #5. The bad point is, most of site which replaced my ranking (#3 - #8) are garbage site with much less content and almost not related to my keyword. Is my site got penalized or something? All contents on my site are unique, useful and written for human read. I wonder if Google update something and other guys faced similar problem like me. Please help
Sounds like garbage site did alot of link building and SEO tricks. Just keep working on that site and get more links.