I started to notice that my server was having performance issues.
Based on the traffic and the server size that I have this should not be the case.
Upon review of the logs I noticed that there were crawlers munching up on my webpages.
This is what my robots.txt looks like now.
Only allow the good ones.
User-agent: Googlebot
Disallow:
User-agent: Mediapartners-Google
Disallow:
User-agent: MSNBot
Disallow:
User-agent: Slurp
Disallow:
User-agent: Teoma
Disallow:
User-agent: twiceler
Disallow:
User-agent: Gigabot
Disallow:
User-agent: Scrubby
Disallow:
User-agent: Robozilla
Disallow:
User-agent: Nutch
Disallow:
User-agent: ia_archiver
Disallow:
User-agent: baiduspider
Disallow: /
User-agent: naverbot
Disallow: /
User-agent: yeti
Disallow: /
User-agent: yahoo-mmcrawler
Disallow:
User-agent: psbot
Disallow:
User-agent: asterias
Disallow:
User-agent: yahoo-blogs/v3.9
Disallow:
User-agent: *
Disallow: /