Hi rupie

There can always be exceptions and don't know your site or the purpose. In general though, flash sites are a major disadvantage. Apart from potential visitors you will never see, the figures for those you do see aren't great, compared to other sites. Bounce rates about 11% higher, time on site even worse, 21% lower.

Visitors apart, getting these sites to perform well in search engines is difficult and they will rarely match other sites even with the best of skills. To give a precise example of one site (unfortunately can't share the site)

Ran as a full flash site for just under two years, so reasonably established but never great performance. The third quarter of 2009 yielded £82000 directly from the site. A complete rebuild went live in November 2009, naturally other improvements but primarily not in flash. The site turnover for the first quarter this year, normally their worst, was £154000, nearly double.

To answer your question, yes there are ways you could serve a site of sorts to the iphone but that wouldn't be the same site and in any event, isn't the point. Doing so in a compliant way would take some effort, which you might prefer to put into a different type of site.

I'm not a flash enemy and in it's place this can add to a site in small doses but isn't good when scaled up, or looking to the future. Not following the Jobsian line, flash will be around for quite a while but is a technology which will wane rather than prosper.