Anyone running a website wants their pages to be found through Google. For that to happen, Google must first index those pages. Although Google’s search and index algorithm is very complex it follows a few basic principles. One of them is that Google indexes any page that has a back link from a page that has already been indexed.
For instance, if you add a new entry to your blog and then post the URL of that blog entry on a forum which is already well indexed by Google, Google follows that link and indexes your new blog entry too. Here is an example: Earlier today I wrote this blog post: Commerzbank/Dresdner Bank BIC Problem, then wrote a short forum post and inserted a backlink to that post entry here: Commerzbank Customer Service Problem and after a few minutes got the following results page when googling the term ‘commerzbank customer service’:
As you can see, my forum past came up in the top search results and my blog post was also indexed by Google which you can check by putting just any phrase contained in the article into quotation marks and googling it:
This means that somebody who has the same problem with Commerzbank like me, can find my forum and blog posts through Google and we can share experiences and maybe come up with a solution together.