I have just read about your this of the question but the thing that I want to say you that as per my knowledge Google have created web-master tool and according to it its working. The other thing is that which type of format you are talking didn't get. Say something in details.

Is not able to crawl Flash content and some Javascript. However, in the last period are strong signals that Google is able to spider the Flash sites.

I mean which text format Google does not crawl?