Is there any way to write in the Drupal back-end the text to display in the search engine summaries?
Currently, the beginning of my home page (usually menus...) is displayed. I would like to add a description instead.
Thanks
Google uses the metatag "description" when is it is available, instead of the content on the page.
There are a few modules that will help you create them:
nodewords and Integrated Metatags
Are the most popular. Using one of these modules will most likely be easier than hiding text with css, and from what I understand google ignores hidden text at least part of the time.
you can see this in action at our site
www.industrytrader.com
Here is a google search showing the how the custom descriptions show up.