Dashes versus Underscores

Is using hyphens in between your keywords more effective than using underscores when naming a Web page?

Lets for Example:

Is internet-marketing.html more readable by search engines than for instance internet_marketing.html?

So the answer of this question is YES because if you have a URL like abc1_abc2, Google will only return that page if the user searches for abc1_abc2 (which almost never happens). If you have a URL like abc1-abc2, that pages can be returned for the searches abc1, abc2, and even “abc1 abc2″.

Reason behind this, please check out from here:

http://www.mattcutts.com/blog/dashes-vs-underscores/

Important Points to Remember while Developing a New Website

Clients usually develop a website by their own designers and outsource the SEO task to some one outside the company. So before the involvement of SEO consultant, the website would be completed and it is very difficult to change the design. So it would be difficult to perform on-page optimization for the Search Engine Optimization consultant. SEO is not an after thought but it should be implemented while designing a new website. For the development of a Search Engine friendly website we need to take care of a few important points. Those are website URL structure, rooms for header tags, usage of flash and other animations etc.