Those are my bot visits stats for month of december on a site with 1334 visits.
You can compare it to your stats.


Yahoo Slurp 420
Googlebot 413
Feedfetcher-Google 236
Unknown robot (identified by 'bot/' or 'bot-') 108
Java (Often spam bot) 89
BaiDuSpider 66
Unknown robot (identified by 'spider') 58
BSpider 42
MSNBot-media 36
MSNBot 35
Others 107

Eli from bluehatseo.com made an experiment with spiders a while ago, maybe it will be helpfull for you http://www.bluehatseo.com/blue-hat-t...awlers-to-run/

regards
silvermario