Back links and building backlinks are the talk of  the town since few years. Every Tom, Dick and Harry is talking about  these. Why so much noise for these terms? Because these are the  essential tools to get traffic and 
make money online as 
internet is a big 
business today. People starts building it just after registering a 
domain name. Creating backlinks is easy. Create backlinks to your website to earn money online. 
Google, Yahoo and Microsoft are big players in 
Internet business. They have large numbers of links to their sites which drive lot of traffic to these sites. 
Google have some 225 millions back links to their site where as 
Yahoo and 
MSN have approximately 90 and 25 million respectively. These help these sites to 
make money online in 
internet business.
You have to 
build backlinks to 
make money online, The
 internet  marketers make it a compulsion to generate incoming links for your web  site or web page to get traffic. You can not make money on the net  without tons of traffic. 
More the traffic, more the  chances to have a click on advertise or an affiliate marketing device.  It is very difficult to get online traffic without sufficient back links  and to get those to your web sites or web pages you need 
building backlinks.
This is one of the most important way of 
search engine optimization (SEO). SEO or Search Engine Optimization is a technique used for the purpose of optimizing your page for the search engines. 
SEO techniques influence positively your 
search engine rankings. This is an artificial way to 
rank higher in 
SERPs.
Though 
content is the king and 
search engines  are continually improving their algorithm to find the best content for  your search terms, backlinks are still important. Very important! These  are the
 keywords to 
make money online.
Now the question arises how many quality backlinks do you need,and where from do you get these magical power. 
Magical number of backlinks 
 Making money online is not an easy job as claimed by  many. You have to face tough competitions to in your way. It is as hard  as making money in real life business. Creating a web page was never so  easy as today. Plenty of online tools are available which creates a web  site or a web page for you. This has brought huge competition in online  marketing.
Before getting the magical number required for your  website you have to know competition and your competitors. You have to  build more backlinks than your competitors to get traffic to your site  to make money online.
For an example, say, you are writing about America and targeting the keyword "
America" and want to get your page in the first page of 
Google SERP. There are ten results in every page. You have to be indexed at least for the tenth position for the keyword "
America" if you want to be in the first page of 
Google search. This is how you can get huge traffic to 
make money online.
Let  us take an example. Say your competitor, the tenth one in the Google  search has ten thousand links. Now you have to build few more 
backlinks than those ten thousand to beat him in the competition for the keyword "
America". If you succeed in 
building backlinks  more than him, you probably indexed in the first page of Google search.  You have to go on building backlinks to rank higher in the 
Google search pages. The same is true for Yahoo, MSN or any other search engines.
Remember, here we are talking of the numbers of backlinks and not of the 
quality of backlinks. However, quality does matter  as in other fields.
However, you have to act on some other things to make 
money online. 
Quality of backlinks
As  I have stated above not only the quantity but also the quality of  backlinks do matter in case of building backlinks. High quality  backlinks are given more weight than low quality backlinks. Hence, you  have to be careful while building backlinks for your site to make money  online.
What quality backlinks mean?Quality of backlinks is decided mainly with two factors. Page rank of a site back linking and relevancy of the site with your keyword or keywords. 
Page rank  is directly proportional to the quality of back links. A backlink from a  pagerank 7 or 8 site is worth more than dozens of backlinks from sites  with 0 or 1
 pagerank. In general, higher the page rank higher the 
quality of backlinks.
The other factor for the 
quality of backlinks is 
relevancy.  Backlinks from a relevant site are worth more than backlinks from  irrelevant sites. Hence quality of backlinks are again directly  proportional to
 relevancy of the sites you are backlinking to.
Therefore, Check the 
relevancy and page rank of a site before 
building backlinks.  If you are able to build quality backlinks with relevant and higher  page rank sites than your competitors then you will be succeed in getting  indexed higher than them (if other factors are similar) and chances are  there that you will be 
getting more traffic. This is the 
keyword for 
making money online.
Start making money online. 
Sign up hubpages. 
How to get backlinks
There  are different types and ways to get backlinks. There are Do follow and  No follow backlinks. No follow backlinks sends traffic to your web site  or web page but search engine do not use these links to rank your site  or page. Do follow links send traffic to your page as well as search  engine use these links to rank your page in SERPs.
You can get 
organic backlinks, 
free backlinks, 
reciprocal links or 
paid backlinks.  When one finds your web site or  web page useful or relevant to their  sites they create a backlink to yours. This happens automatically  without any efforts from your side. These are called 
organic backlinks and sends 
organic traffic to your web site or web page. Some times people bookmark your web site or web page  in 
bookmarking sites or 
social networking sites too which provides you with backlinks. These are 
free back links obviously.
You can also 
create free backlinks by linking your site or page to your own blogs and sites. Some 
social bookmarking sites allow you to create your own links. You cam submit your web page or web site to various 
internet directories to get 
free backlinks. Commenting on others 
blogs and participating in forums are other ways to 
get free back links. You can also get backlinks through 
News, Images and
 videos. 
RSS is also a good way to get 
free backlinks.
One way links and reciprocal links:Above mentioned are examples of 
one way links. Some sites ask you to create a 
reciprocal link against which they generate a backlink to your web site or web page. These links are called reciprocal backlinks. 
Reciprocal links have lesser value than one way back links.
Paid backlinks are different than
 free backlinks. Some sites ask money to backlink you. These are 
paid backlinks.