In that post, they recommend providing alternative navigation options on Ajaxified sites so that the Googlebot spider can index your site’s pages and also for users who may have certain dynamic functions disabled in their browsers. They also recommend designing sites with “Progressive Enhancement” — designing a site iteratively over time by beginning with the basics first. Start out with simple HTML linking navigation and then add on Javascript/Java/Flash/AJAX structures on top of that simple HTML structure.

Before the Google Webmaster team had posted those recommendations, I’d  published a little article early this week on Search Engine Land on the subject of how Web 2.0 and Map Mashup Developers neglect SEO basics. A month back, my colleague Stephan Spencer also wrote an article on how Web 2.0 is often search-engine-unfriendly and how using Progressive Enhancement can help make Web 2.0 content findable in search engines like Google, Yahoo!, and Microsoft Live Search.

Way earlier than both of us even, our colleague, P.J. Fusco wrote an article for ClickZ on How Web 2.0 Affects SEO Strategy back in May.

We’re not just recycling each other’s work in all this — we’re each independently convinced of how problematic Web 2.o site design can limit a site’s performance traffic-wise. If your pages don’t get indexed by the search engines, there’s a far lower chance of users finding your site. With just a mild amount of additional care and work, Web 2.0 developers can optimize their applications, and the benefits are clear. Wouldn’t you like to make a little extra money every month on ad revenue? Better yet, how about if an investment firm or a Google or Yahoo were to offer you millions for your cool mashup concept?!?

But, don’t just listen to all the experts at Netconcepts — Google’s confirming what we’ve been preaching for some time now.