http://www.flirtbox.co.uk should be listed.
Either the whole page is deleted as it is useless or it will need to contain all relevant dating sites in the long-term if enough people contribute to this list. With over 1,6 mio members it is more relevant then other dating sites mentioned here.
Alexa is not a good factor as it does not cover sites with several urls or mobile app based sites.
The 2 biggest dating sites are missing. I do not understand the whole point of this wiki page...neither complete nor useful.