Well, Quality backlinks are very important. Quantity is not so important if we have a bunch of low pagerank links. However, if we have many anchor text for quality links, we can boost our website onto the first page of google.
What is Google updated algorithm for SEO? Recent days Search engine doesn't give important to meta tags and back links.Share your idea Plz?
Well Matt Cutts, main engineer at Google Anti-Spam team has explicitly said that htere were about 12-13 algorithm changes after Panda update. Don't try to chase after algorithm updates, try to generate good content and aim for organic links. If your niche is something in which you can't really get natural backlinks, do blog commenting and forum posting but remember to do it right. Don't just spam the internet, try and add more value to the internet.
Apart from the fact that Google don't tell anyone what their algorithm is, they also change it on a frequent basis and so if you did get hold of it then by the time you could understand it they would have changed it.