Move over disposable cameras. 'Real-time' photo slideshows are the hot wedding trend du jour. If you like the idea of screening your big day pictures as they happen, then Knotpic (www.knotpic.com) makes this a cinch. Set up a gallery - from a wallet-friendly £18 - and ask your guests to add their photos to it throughout the day. All they need to do is email or text snaps taken with their digital camera or camera phone, to the gallery, which will instantly be added to the slideshow for all to see. See for yourself at www.knotpic.com.