Firefox cookies set up
If you do not want to open up your browser to all 3rd party cookies or all pop ups follow the instructions below.
Add the following web sites to the exceptions for those settings. In Firefox add the sites under the Content tab for pop ups and under the Privacy tab for cookies. For the cookies to work you must set the History setting to "Use custom settings for history"
Slashkey.com
L1.slashkey.com
Facebook.com
Apps.facebook.com
Also , if you have an ad-blocker plugin in your browser make sure the above web sites are also allowed in that too.
Be sure you close and restart your browser for those changes to take effect.
*Note: If you are using private browsing either through your browser or through your anti-virus program, that will block 3rd party cookies and pop ups. You need to turn this off for when you are in Farm Town, so that those cookies and pop ups can be seen.