It's often the case that the more serious people are about finding a mate the more likely they are willing to pay a subscription.
There are also online agencies specifically for Christian, Jewish or gay singletons.
There's a dating site for art lovers and, if you are outdoorsy, there are a number of suitable sites.
'He's too short, I don't like her eyes, or he doesn't make enough money'.
e Harmony's relationship advice expert Jenni Trent Hughes suggests not being too judgmental.
"Try turning down the volume on your inner critic on a superficial front, you may just discover you're a better judge of character, and are better able to decide if your date is someone that you connect with on a new level," she says.
Some sites are free, but for most sites you have to pay and it can get quite expensive.
If you have an overriding interest or outlook, there are plenty of niche sites out there.There's uniform dating for people who work in uniforms, vegetarian dating, sites for older people or for those with children.