Creating slideshows for your favorite photos not only requires a lot of effort, but can also be a time consuming task, especially when half of your photos are on Facebook, others on Instagram or Flickr, and the rest saved on your computer. So, with all your pictures scattered, how do you create a slideshow? Slide.ly is a free web application that grabs all your photos/albums from multiple popular social networks, such as Facebook, Flickr, Instagram, Picasa and Google Images, letting you create gorgeous slideshows with a mix of your favorite music tracks and effects. The app is easy-to-use and comes with a slick interface. Once you’ve connected all your accounts, the service will let you pick and arrange images from different sources. For instance, you can select five photos from Facebook, two from Instagram, a few from the local disk and so on. When the images have been added, you will be able to arrange or shuffle them, add your favorite music from YouTube or SoundCloud, and add bright dots, spots, dust or glow effects to your slideshow. Moreover, with Slide.ly, you can share slideshows on social networks, email, embed or copy the URL.