There is a paragraph in firefox sync to opt out for host name what do you have to do in about config to opt out?
paragraph: "The Firefox Sync Service also receives the host names you have given your devices that you are syncing. These names are used to label your tabs within Firefox Sync. If you don’t want to share your name, you should consider naming your devices with fanciful names rather than your actual name. The information is transmitted via SSL. Currently, you can opt out of this by visiting about:config. "
paragraph: "The Firefox Sync Service also receives the host names you have given your devices that you are syncing. These names are used to label your tabs within Firefox Sync. If you don’t want to share your name, you should consider naming your devices with fanciful names rather than your actual name. The information is transmitted via SSL. Currently, you can opt out of this by visiting about:config. "