5 Lovestruck (lovestruck.com) matches urban desk pilots with people in other local offices.
7 TEE fore TWO (uk) This site for golfers has, believe it or not, more male than female members. If you're just looking for a more mature fellow who likes to get a bit of exercise – the membership tends to be over 40 – you could do a lot worse.
8 Dating Direct (datingdirect.com) Another industrially massive, utterly straightforward site.
Like Match.com, this is useful if you're looking for someone outside your usual cultural boundaries, and favour the shotgun technique over the sniper rifle.
Populated by fiercely intelligent, beautiful people with sensible political views; or, put another way, Telegraph readers.
Average age is more mature than most sites, but there's a healthy smattering of younger daters, too.
Match claims seven million joiners in Britain since 2005.
That's almost one in eight British residents, so it's clearly an exaggeration, but the site is still massive.
So it's a good option if you want to meet someone from a different background, and have time to trawl through "millions" of potentials, mostly aged 25 to 45.
A friend writes your narrative on MSF, then you comment: "Can't believe you mentioned the charity work, the lottery win and the modelling." So, someone else shows off for you, plus there's less of a stigma because you didn't sign yourself up. With 8,000 to 10,000 new members every month, this is a cracker.
4 Guardian Soulmates (dating.uk) Telegraph readers don't generally chase Guardianistas but Soulmates is a sensible choice for urban intellectual types, with an average age of 38 and more than 145,000 members.
Soulmates' profiles are about the wittiest, so it's certainly worth browsing this site to steal ideas.