public void addSeedScope(LinkRelevance link) {
        if (useScope) {
            scope.add(link.getURL().getHost());
            seedScopeFile.println(link.getURL().toString());
            seedScopeFile.flush();
        }
    }
This class manages the crawler frontier

@author Luciano Barbosa
@version 1.0
ache/src/main/java/achecrawler/link/frontier/FrontierManager.java