Now Symantec, one of a handful of key players in the content-filtering market, is joining the push. SAN JOSE - A popular online safe-search filter is ending its practice of blocking links to mainstream gay and lesbian advocacy groups for users hoping to avoid obscene sites.įor several years, top Web-filtering services have been resolving a security over-reach that conflated gay rights websites with child porn, blocking both from web surfers using safe-search software.