Json and crawlable content - simple explanation

[TruvoDirectories]

Hi There,

My IT colleagues are trying to improve performance on our homepage, and they suggest to use Json. They were inspired by Facebook that uses json. Now they ask me if this can have an impact on SEO.

Most expert readings point to this page

http://code.google.com/web/ajaxcrawling/

Fine.

Can anyone explain me in a few simple words how I should proceed when I want to optimize my homepage http://www.example.com/ for both performance and crawling when using json. Do i need 2 separate pages (ugly/pretty)?

Kind regards

Pieter