She has declined to tell me her name, so I have to think of her as her web sobriquet.

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One woman sends me a message heavily laden with sexual innuendo and I come to regard her as the mistress of the single entendre. Another woman's first contact with me included a plan for a day out together, including visits to art galleries, a stroll round a park and then "a few hours under the duvet". I'm later propositioned by someone who tells me she has an hourglass figure.

Her photograph reveals that the hour has stretched to 90 minutes.

They are allowed to sign up for free as a way of ensuring the numbers are balanced between the sexes.

I register, and enter the murky world of two-timing technology, taking note of the warning on the site: "Not all affairs have a positive effect on a marriage." What a masterpiece of understatement.

And all of them are looking for an opportunity to betray their spouses. But I wanted to find out what sort of woman uses such a site.

So I paid £119 for a month's membership, giving me an entre to thousands of faithless females.

Our relationship, I note, has suffered because we don't spend enough time together (not surprising really, since she doesn't exist).

After a quick search, I get the measure of the women on the site.

Yes/No; While it is free to use, POF offers premium services as part of their upgraded membership, such as seeing the date and time a user viewed your profile and allowing you to see whether a user read and/or deleted your message.

"I want a man with a personality and looks to take my breath away." These are the requirements of the dark-haired, dark-eyed, 37-year-old Asian beauty who has sent me her romantic wish list.

I'm already starting to feel like I've had enough of this experiment.