Another challenge is ensuring the timely delivery of the messages themselves.

The method we chose to get text from one user to another involves loading an iframe on each Facebook page, and having that iframe's Javascript make an HTTP GET request over a persistent connection that doesn't return until the server has data for the client.

It could be anything from a stroll around a local park with take-away coffees, or, like I suggested, chatting and browsing through art galleries and exhibitions.

The app is easy to use with a simple profile set-up and it allows you to show your interest in people, message them and eventually ask them out. SB: The idea of meeting someone because they picked out a great date idea is novel and speaks to the romantic in me.

RJ: You log on through Facebook, but they only use your first name, age and friends in common, so all your other details are confidential! It’s a great platform to meet people whom you might not have got the chance to know otherwise.

You select your preferences, namely: male or female, age limit and radius of how far you want to go to meet your match. RJ: Personally I’d like to know a bit more about someone, especially if we don’t have any friends in common. I’ve noticed that there aren’t serious dating tendencies through Tinder though. RJ: There are plenty crazy cats out there with odd requests.

Even without accounting for the sizeable overhead of spawning an OS process that, on average, twiddles its thumbs for a minute before reporting that no one has sent the user a message, the waiting time could be spent servicing 60-some requests for regular Facebook pages.The request gets reestablished if it's interrupted or times out.This isn't by any means a new technique: it's a variation of Comet, specifically XHR long polling, and/or BOSH.Just be wary of who you meet up with and be upfront about what you’re looking for. App: How About We Testing it out: Sheena Bagshawe Age: 25 Occupation: Fashion Assistant ELLE: How does it work?SB: Instead of basing your choices solely on someone’s looks and carefully constructed information on their profile, lets you pick a date based on the activities they suggest.