There are several ways to share saved sessions with others.
If you have saved your settings to a local file, you can send email to others with the file as an attachment and direct them to http://www.noncode.org/cgi-bin/hgSession .
If a saved settings file is available from a web server, you can send email to others with a link such as http://www.noncode.org/cgi-bin/hgSession?hgS_doLoadUrl=submit&hgS_loadUrlName=U where U is the URL of your settings file, e.g. http://www.mysite.edu/~me/mySession.txt . In this type of link, you can replace "hgSession" with "hgTracks" in order to proceed directly to the Genome Browser.