Option: Generate Birthday calender out of the contacts
Use the Synergy: add an option to create a birthday calendar out of the contacts data. :)
Tom Atkins commented
As a workaround for this I use the following setup:
For desktop with Thunderbird use the 'ThunderBirthDay' addon: https://addons.mozilla.org/en-US/thunderbird/addon/thunderbirthday (There are also addons for birthday reminders)
On Android I'm using the open source 'Birthday Adapter' app which seems to work fine with Fruux. https://github.com/dschuermann/birthday-adapter/issues/81 It has a nice feature to set configurable reminders for birthdays as well as displaying them in your calendar.
... and that calendar should not only show up in the webview (as other services only do) but also should sync with the devices.