We’ve been able to post Flickr slideshows for a while, but Picasa is just now giving us the slide show love. Getting your slide show posted is pretty easy. Just get a Picasa album ready with the photos you want inside, and then look for the “Embed Slideshow” link. Once you click on it, you’ll get a pop-up that presents you with some cut/paste HTML you should grab into the clipboard. You can adjust the sizes of the slide show, and have it show the captions you’ve entered in Picasa.
You can embed Picasa slideshows into WordPress easily by pasting the code into sidebar widgets which is a super simple installation into WordPress 2.1x (and is then found under the “Presentation” tab. or the new widgetized WordPress 2.2 where these functions are built right in. Once the Picassa code is pasted in, save the new sidebar and voila! Slideshows galore!