If I use related directories for linkbuilding, then is there any extra benefits? Suppose for health related site directory would be healthdirectory.com. Is there any facilities for google indexing?
Yeah thats really helpful. Infact, people look for niche sites, I'd say go for directories because they have all the niches and high authority as well.
I think that linkbuilding should be established with your website niche content. In this way ,you will get actual traffics which will mostly converted into customers or sales for your business website.
Of course it will be more beneficial as using niche related sites are much favorable than just the random ones for link building purposes.
The most important thing is the PR of any directory. Relation is important but directories also place the link in the related category therefore I personally believe if the directory is worth it then you will surely get the advantage.
I have to disagree with pagerank being the most important thing. For one it's currently seven months out of date. 1) Can the site rank for it's own domain name? 2) Is there a category relevant to my keyword? 3) How old is the directory, (has it stood the test of time?) 4) Quality of listings. 5) Alexa rank 5) DA/ PA 6) PageRank
Submitting To Directories There are hundreds of directories out there that let you submit your blog to them for free (there are also some paid ones). This will not only help increase your traffic by people looking through the directories and finding your blog, but it will also help you to get backlinks to your blog. A lot of blog directories have a high page rank and this in turn will help you to rank in the search engines.