Keyword Competition Crusher uses extensive data from Google. If overused you may experience temporay restrictions from Google. This normally only lasts a few hours and is indicated by "503 Errors" showing Google.com as the address.

To help avoid this you can add proxy IPs that will hide your real IP address. You can find free public proxies but these tend to be slow and unreliable and do not always fully hide your IP. You can find
free public proxies here.

Private proxies are recommended.

IMPORTANT: Many hosting companies only have PORT 80 open on their firewall. This means only PORT 80 proxies will work by default. If you use any other ports you will need to request them opened from your hosting's support desk.

Note also that, unlike public proxies, most private proxies require username and password. If required enter the username and password as well as the proxy IP and Port in the form at the top right of this page.