"The effective ways to gain more website traffic..." It's just nonsense, there is no just traffic. There could be traffic of the law agency website, which is occupied by Internet law.

For example: If the website has PR less than 10, than looking for keyword "attorney", the search engine will find 100 millions of webpages, and the possibility, that there will be a click on your website, is 0.
Adding necessary keywords, targeting the search query, the possibility of click increase, so the traffic increased too.

For example: you have a goal to increase the traffic the page http://db2b.info/addwebsiteurl.html from business oriented law agencies.

We don't write "add URL for FREE!!!!!!!". Because... it's just useless
We write "add URL Lawyer for free", "add Law Firm web site for free to lawyers directory",
and it's also useful to add "Patent Attorney Search Anaheim", "Property Law Easton" - i.e. specific cases, that are also included into our directory ))

Millions of people are writing "add URL for FREE" on the pages (on forums, classified ads). The search engines show only first thousand. If the website has a PR less than 10, the chance it to be located is 0. But! Only hundreds of thousands are writing "add Law Firm web site for free to lawyers directory" (search queries are not less! And they are from businessmen). In this way there is a chance for website with PR 3.

If you will add "Anaheim", than sooner or later there WILL be a click from the search engine. To the webpage with keywords "ADD URL" and PR less than 10 - there will never be a click!

In this case, the possibility of click from the search engine is different from 0.