We have bundle of webpages where we load the content dynamically with the help of Ajax. Since we, need to implement Ajax crawl scheme for making Google to read those Ajax dynamic content we planned to go with hashbang URL's (!#) by creating HTMl snapshots. But last week Google withdrawn their support on crawling the Ajax crawling scheme we are planning to go with progressive enhancement approach as stated by Google in a press release.
So, I just want to know what is meant by progressive enhancement and how we can implement in the case of webpages where we load the content dynamically with the help of Ajax? Please advice me on this.