Ok, a summary of dating sites:
Firstly, choose your dating site carefully. Different ones are best for different goals and locations.
Pof is the biggest one, covering more areas, and also it's free. But there is a lot of crap in there. It's the McDonald's of dating.
There's OKC, for people with a certain taste (generally more polyamorous, fetishy types). Also free. This is nandos. Relatively cheap, but spicy.
Match is your gourmet burger bar. Large coverage but you've got to pay. Less likely to get an unexpected gherkin, but there are still some.
You have your niche sites, singlesdating, seacaptaindating. Catering to small markets, fewer profiles, but if there's traffic in the area where you are, you can be successful. This is little chef.
And tinder, which offers quick, simple satisfaction but tends to leave you with an unpleasant aftertaste, and possibly an STI. This is your late night burger caravan.
Bumble is the feminist version of tinder, where women have to message first. This is the kebab van outside the local WI hall.
Then there's elitesingles, guardian soulmates etc. Only good in large cities, costs money but promises to give you what you want. This is your farmers market deli. But it's very rarely open for business.