On safari web browser on iphone 3g, os 3.0
I've notice a symbol on the far left side of the web page.
It's a lite gray triangle in a crossed out circle.
I've just come across this symbol on this site:

Watch Movies Online For Free Full Movie Downloads
tab onto any movie from this site and this symbol is there.

Is it because of the "flash player" thingy/issue?

Thanks in advance