FarmersOnly.com does have a phone number: (888) 755-9655
They also offer an online form you can fill out to send questions to them, though they suggest that many answers can be found on their Frequently Asked Questions (“FAQ”) page.
To join FarmersOnly you can enter your email address, zip code, gender and that of the person you seek, along with your age on their registration page.
The Huffington Post offers lots of tips for dating including:
Is He Into You? 5 Ways To Know For Sure
How to Find Play, Fun and Love... Maybe
Till Death Do Us Part: The Recipe for Lasting Love
Check out Online Dating Safety Tips Every Woman Should Know, shared by eHarmony.