Negative SEO
Actions intended to harm another website's visibility, such as link spam. A ranking drop alone proves no attack; investigate evidence and alternative causes.
Definition and sourcesKNOWLEDGE / FROM A TO Z
Glossary
Technology, explained clearly. Find a term, choose a letter or narrow the topic. Definitions include sources and their review date.
Terms 3 / 685
Clear filtersNofollow
A rel value indicating how search engines should treat a link. Nofollow is a hint, not a reliable indexing block or access control.
Definition and sourcesNoindex directive
A directive asking supporting search engines to exclude a page from indexing. Crawlers must be able to read it; noindex does not secure confidential data.
Definition and sources