Hey, i remember reading that the use of Flash for designing websites is not recommended because it affects search engine ranking. Why is this? Websites created using Flash look very good and it can be a great way (in addition to good content ) to persuade visitors to stay on your site. Any other disadvantages besides search engine ranking?


Also, are there any disadvantages of creating a website using CMS instead of traditional HTML + CSS? For example; does it affect search engine rankings, etc?
(The CMS i'm familiar with is Joomla).

Thanks in advance.