I use a simple text editor too (Textpad). There are no pro and cons with text editors, you like them or not, and Textpad is lightweight and handy.

The pro: If you don't have sophisticated webpages a text editor is ok, you control the content of your webpage (there's no extra stuff).

The con: you gotta learn html, PHP and CSS. For JavaScript there's a very good library called JQuery which does extraordinary stuff (like for exemple the preview windows in the Marketplace).

Yarp - author of P3DO Organizer for Poser