You might not know it, but when you put a photo into a Blogger post, it automatically gets uploaded to a Picasa Web Album . Picasa is Google's image editing and sharing platform, and it exists as both a website and software you can install to manage photos on your computer. Because we are using Google Apps accounts for many of our day-to-day needs, you already have an account for the Picasa website. If you use Blogger, you likely have photos there already! Check it out ! GUIDE: How to embed a Picasa slideshow in a Blogger post! Upload photos to a new album. Under My Photos, click the upload button. Make sure to give your album a name! Perhaps the name of your iPhoto event, if you used my previous guide for shrinking photo file sizes. Select the photos you want to be in the slideshow. Only upload photos to this album if you want them to be displayed as part of your slideshow. Make the album public. After the photos are finished uploading, open the new album in ...