This is a file extension for HTML files that incorporate "Server Side Includes" (SSI). It allows a server to add dynamic content to a page without full-fledged programming like PHP.
When you search for this, you often land on pages that were never meant to be public. These pages often contain: view indexframe shtml hot
If you are using , you can display a "hot" (live/interactive) report within your web page: This is a file extension for HTML files
grep "indexframe.shtml" /var/log/apache2/access.log | grep "hot" | awk 'print $1' | sort | uniq -c view indexframe shtml hot