I feel backlinks are important and it should be targeted from high traffic / high PR websites. This will give you a steady flow of targeted quality traffic and will help lower your bounce rate greatly, and increase pageviews, sales, and overall income.

more backlinks are needed,even if your webiste have been filled with many valuale content,but in fact,this is also the trouble that I am facing,my site only have a backlink which is not high quality,mywebsite has launched for almost 4 months,but still now,only tiny visitors can visit by searching related keywords to find my site,it is a pity although I also have paid to much attention and efforts

It is fact that all major search engines are in counting of quality backlinks also when they place site in rank. There are numerous other factors also , which can't be neglected yet backlinks is one of the main factor.

Today, backlink is very important if you are in high competitive keywords, according to competition you have to do link building.

Backlinks are important for new websites. You will let them know that your site is exist or not. Quality backlinks are good and will help to increase your website to have a better ranking in Search engines plus a chances to increase your website G-page rank. Building more backlinks through articles submission, forum posting, blog commenting, web directory submission, link wheel and link exchange.