My site has been up for a while, it makes some sales. I have just learned ssi (asp, php, etc) Should I redo the site?
Yikes! I just went through that. Site was making me about $400 per month, I redid it with server side includes. That meant all pages changed from html to shtml. All my spots with search engines became invalid as address changed. It has taken 4 months to become established again, and will probably take another 3 before sales are back to before.