I'm still seeing some rather obsurd SEO advice on the web. Here are two direct quotes from a fairly well respected web design blog, and they are fairly common beliefs about SEO that are just wrong.
“You’ll already get a slight increase in rankings from a validated site, without even taking content into consideration.”
If you watch this video you’ll see that around 1:30 Google’s spokesperson very clearly says there is no boost whatsoever for having a validated website:
“Flash websites are pretty much ignored by Google.”
According to an article about flash on google’s blog they do read flash content.And are actively working with Adboe to improve flash content indexing.
A better statement would have been “Poorly designed flash sites are invisible to Google” if you convert text to shapes in flash, then yes, your site will become invisible to Google.
Another common misconception about SEO is that the most important factors are on-sight optimization, and that simply is not true. On-site optimization only helps Google know what your website is about. If you want to rank higher, more important factors are the quantity of in-bound links and the nature of the websites that are linking to you.
I hope this helps you real estate webmaster out there in your endeavors. Thank you.