I don't see a guide for this one and it isn't perfectly straightforward so here's how I'm doing it. This will assume you've created a Picasa account and already uploaded photos from your computer/mobile (that's the easy part). -When viewing a photo on their web service (picasaweb.google.com), you are given a tool menu on the right hand side of the screen. At the bottom is an option that says "Link to this Photo". Click it. -Now if you're attempting to add the photo directly into a forum post YOU CANNOT USE THE LINK AND EMBED IMAGE addresses yet. This is what gave me problems. -You need to click the box that says "Image only (no link)" and select a size from the dropdown menu. Medium 640x640 seems to work pretty well for me on this forum. -Now you can use the "Embed Image" URL address directly above the dropdown menu. Copy it. -In your post, click the little icon that looks like a tree and paste the "Embed Image" address into the "Enter Image URL" line. Click Insert. Item of note: Picasa is very convenient for syncing to and uploading from Android mobiles BUT you can't get the image link from a mobile (from what I can determine). Hope this helps some folks out!