[enjo]

So the author makes the supposition that Flash contributes to low ranking (in that the content is not indexed). Google most definitely crawls flash (in some fashion) at this point...

I'm curious, does anyone have any idea how that content ranks compared to good old fashioned mark-up? Is it 1:1? Is it harder to rank with flash content? I really have no idea.

[Concours]

SEO for flash is very complex, mostly based on tips and tricks. The easiest way to go is external links with anchors +the basics html optimisation. If you are serious about it, Adobe has partnered with the search engines to make flash content discoverable (Ichabod), some peoples (Damien Bianchi) suggest developers to create XML and video sitemaps along with an HTML sitemap for websites, reading this article may help you : http://www.adobe.com/devnet/seo/articles/checklist_ria.html , I hope this helps.

[kadavy]

Yes, Google supposedly indexes some Flash content, but the potential complexity of a Flash movie is limitless, so they can't possibly index all of it.

[landyman]

It depends on the site and the terms people are searching for. Inbound Links can make a site rank highly for some searches, even when the entire page content is Flash and has no other content on it. But, to rank for all the terms you want, having Flash content only will not work.

[mgcross]

I always use swfobject.js and include alternate html content for flash-only sites. Google will pick up the alternate content rather than crawl the flash, from what I gather. A few years ago, before I included alt content, Google was indexing content like movie clip instance names in addition to the contents of static text boxes.