A lot of web designers use WYSIWYG (What You See Is What You Get) website editors.
The truth of the matter is, for SEO or any other “Development” purposes, WYSIWYG Website
Editors such as Dream Weaver, are terrible for SEO. They create a lot of CSS and xHTML Errors.
For the best SEO Engeneering, We really suggest PSPAD. It’s FREE, supports all scripting languages
such as ASP .Net, PHP, HTML, etc. It doesn’t create the un-necessary scripting junk.