However, when people click on the result they get taken to the album page of thumbnails. Some of my less technically savvy friends don't realize or notice that they can get a slideshow so they end up clicking on the photos one at a time to look at them.
You can fix to go directly to the slideshow by changing:
#slideshowin the HTML. There are two occurrences - one for clicking on the photo and one for the caption.
You can see examples in my Sustainable Adventure blog.
Note: Picasa also has an "Embed Slideshow" option under "Link to this Album" but I don't normally use this because it only shows small images and I'd prefer to have people view my photos larger. I do use it when I'm not as concerned about image size. (You can still click on it to go to the Picasa album, but most people won't bother.)