A webmaster posted a question at both Search Engine Roundtable Forums Search Engine Watch Forums asking what is the htdig-noindex meta tag do.
Both threads point to http://www.htdig.org/, which is an open source search engine. This open search search engine, named ht://Dig supports a noindex meta tag "htdig-noindex." So if you want to block this search engine from indexing you, just add:
<meta name="htdig-noindex">
The search engine recognizes and supports the following meta tags:
- htdig-keywords
- htdig-noindex
- htdig-email
- htdig-notification-date
- htdig-email-subject
- robots
- keywords
- description
Forum discussion at Search Engine Roundtable Forums Search Engine Watch Forums.