Please help me to clear doubts in SEO?

[Mark Thompson]

First of all, Google is getting better at crawling Flash, however they are still not great at crawling it. Let me ask you this. Is it necessary to have flash on your site? What is the flash doing that you couldn't accomplish with a more friendly programming language?

The reason you see high PR for many flash-based sites is because many of those sites are huge brands, that are able to leverage their long-term credibility and quality inbound links to get that high PR.

I would strongly not recommend flash if you can stay away from it.

As for powerpoint presentations, you can optimize your slideshows by incorporating keywords in the Title, description and slidshow file name. Try uploading your presentations to Slideshare and Scribd.