Google spider me too much!

I have something that starts to look like a problem. I run a small forum with something like 10-20 topics per day. We have about 5,000 topics in total. Google eat almost 80% of my bandwidth meaning about 6Gb per month.

I am using a robots.txt file but it does not seem to do the trick. I want Google to spider but not the whole site every hour. Anyone here who have solved this problem?

I am using Googles webmastertool, but changing the speed which googlebot spider makes no difference.

What I would like to do is to ask Googlebot to visit only one time per day...

The site is www.thailandsforum.se

You can use the crawl-delay option within robots.txt to slow down googlebot: where the delay is the number of seconds between pages crawled.

I'd also check the logs and confirm that it is really Google, and not a scraper or other undesirable pretending to be the googlebot.

Check the source link:http://www.google.com/support/webmasters/bin/answer.py?answer=48620

Is the Spider and the Bot the same thing? I get a daily visit via the bot so im assuming the bot and the spider are the same?

Or simply move bot to banned category! Crapy, but works

Log in your Webmaster Console at Google and select a slower crawl rate.