Seed Sites are a list of urls that Yioop should start a crawl from.

If under Server Settings : Account Registration user's are allowed to register for Yioop accounts at some level other than completely disabled, then the Tools: Suggest a Url form will be enabled. URLs suggested through this form can be added to the seed sites by clicking the Add User Suggest data link. These URLS will appear at the end of the seeds sites and will appear with a timestamp of when they added before them. Adding this data to the seed sites clears the list of suggested sites from where it is temporarily stored before being added.

Some site's robot.txt forbid crawl of the site. If you have your crawler configured to always follow the robots.txt file, but would like to create a placeholder page for such a forbidden site so that a link to that site might still appear in the index, yet so that the site itself is not crawled by the crawler, you can use a syntax like:

http://www.facebook.com/###!
Facebook###!
A%20famous%20social%20media%20site
 

This should all be on one line. Here ###! is used a separator and the format is url##!title###!description.