Estimate AdSense revenue based on traffic

Is there anybody that made an estimation or that has any experience of this kind. We would like to use AdSense for one of our sites and was wondering if there are any estimations on what revenue to expect based on traffic to our site (say $$/1000 unique visitors or something similar). The site deals with webmaster related stuff.

I know this is hard to say and it depends on many factors all I am asking is for a rough estimate or even your personal experience.

Thanks.

Depends upon way to many factors...

theme of your site determines payment per click
placement of ads determines CTR
quality of your other content influences CTR
format of your ads influences CTR

Full agreement with Egol, i.e. there is no way to predetermine revenue from traffic with so many variables. One comment: any site that does not have fresh eyes every day (new visitors) has a much lower CTR because return visitors filter out the Adwords on any given site/page that they continually visit. Second, you get the worst CTRs on sites that service the webmaster industry. Webmasters are normally not too intriqued with ads and do very little clicking on them. For example, I have never clicked on an SEO Chat ad and could not tell you offhand, without checking, what ads they are running.

Thanks for the input EGOL and SEO_AM. I was expecting it to be quite hard to estimate. Can somebody come up with their personal experience? Might end up not to be very relevant for us but still it's a practical example that we can use.

Estimated Earnings:
1000 impressions/mth * 3% (est CTR) * $0.25 (average CPC)
=$7.5 (estmated)/mth

work on CTR (ad placement) to boost your earnings
work on CPC (high paying keywords) to boost your earnings

Google adsense reports (unless I'm mistaken or confused!) actually give you this estimated money per 1000 users value every month, and it is easy to make predictions from it.