And did you realise that your probably wasting a lot of time and effort in doing this?
These spiders are sent out to re-visit sites at irregular intervals and the search engine listings are then updated.
This update can result in a site being added or removed from the listings as well as affecting its position in search results.
So if you regularly update your site, you need to update it in-between spider visits.
Updating at any other time is just a waste of time and effort.
But how do you know that a spider has visited your site?
Search Engine Detector offers a simple way to detect spider visits, automatically notifying you by email that a spider has visited.