Forum Moderators: open
The Google Directory (as opposed to search results) are taken from the ODP - the Open Directory
Project - at www.dmoz.org. Google copies the ODP directory about once a month.
The ODP is maintained by volunteer editors. These editors will check your site occasionally to see
that the contents match the description. How often they check seems to be variable. So you could
have one month minimum (Google update time) or you might stay in for a year. But eventually, your
site will be checked and your ODP listing may be dropped.
You might wish to change the description of your site in the ODP, or to move it to another
category. This would be better than being dropped completely.
Jim