The quantity and quality of the backlinks play a key role in fetching a higher Google pagerank and thus a higher authority and a healthy traffic. How to provide backlinks? Which backlinks are good and which are bad? These are frequent questions which pop up in the mind of budding bloggers while trying to promote their blogs.
There are two methods in which budding bloggers can have get good backlinks. These methods are:

Free Methods

Bookmarking Sites
There are numerous bookmarking sites floating online. But, only a handful of them are able to provide good links to the submitted material. To achieve instant response and better backlinks submit each and every article you post, to the social bookmarking sites. Do not get confused with the huge number of bookmarking sites available; just stick to the best bookmarkers like the Digg, StumbleUpon and Technorati. They are enough to serve your purpose.

Commenting On Authority Sites
There are sites which are pretty old and their anti-spamming laws are not so strict and thus, allow the users to submit their links along with their comments. www.onlywire.com are some such sites. only thing you have to do is make two different accounts and start commenting on the various new topics under discussion.

Free Blogs At Wordpress Or Blogger
Create a two or three free blogs on some big blogging site like the Wordress.com, Blogs.com or Blogger.com, to name a few. Then quickly generate a good content on these blogs, either by copy-pasting from some other site or just by writing it on your own. Do not get too much into writing original content on these blogs. Just put around 50 to 70 copied but interesting articles on each blog and then leave them as such, for a month or so.
Keep checking their google ranking regularly after they become a couple of months older. After a couple of months when they get a good a Google pagerank, link your independent blog with this Free blog.
You will see that the blogs which are build on these big sites get a good pagerank and come in search results more frequently than your individual blogs. Linking to these blogs will be a great help to your blog.

Yahoo groups
Posting your links at yahoo groups is also seen as a good way getting a boost in traffic and a fair backlink. But, posting comments and links on Yahoo groups is yet not seen as an effective method.

Paid Method

Buying Backlinks
I wont recommend this method to you, but then also many bloggers do this in order to get instant and fruitful results. Become a member of any Webmaster Forum, like the DigitalPoint.com, and then go through the categories at the panel, here you can begin your thread requesting for a backlink from an authority blog or site. On receiving some good offer, go for a blog which has a higher pagerank, preferably 3 or 4, a good alexa ranking and a regularly updated content.
If your budget is low than you can think of compromising on any of the above mentioned characteristic, but do not go for a low pagerank site or blog.

But, for a good pagerank  always try to build up a genuine and creative stuff on your blog. Originality is the only thing which can help you sustain in your niche for long.

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