What?

Increase your server capacity.

Say again?

Increase....

You've apparently been slashdotted at some point. You must have gotten some exposure on some high-visibility site that maxed-out your server capacity. So, somebody helpful posted a cob-webbed link to your site. This directs users to a cache of your content. (CoralCache is a more popular alternative.)

See here for details:

[cs.cornell.edu...]

The real problem here is the search engines. They should know about this, and not index Coralized or Cobwebbed URLs. (Or strip-off the cobweb part.)

I suppose you could find out where these links are posted, and request that they be changed.