This caught my eye and it's an interesting puzzle, actually, because Google now apparently has two different faces to the same photo management core, one called Picasa (aka picasaweb.google.com) and one that's an underlying foundation of Google Plus. The latter I'll call Google Photos because I suspect that at some point that's what it'll be renamed if it even exists as a separate entity to Google Plus.

At this point in time, though, we're having to suffer through a tool that's evolving and not in entirely pleasant and easily understood ways. To wit: the embed code desired simply isn't available within the Google Plus photos interface and you'll have to go to the old Picasa interface to find it. Since the "Photos" link along the top of Google apps points to the new interface, not the old, one does wonder how long the URL picasaweb.google.com will hang around too.

The solution is to add features like "embed this photo" within the Photos interface, of course, and otherwise add features and capabilities to Google Photos so it matches what's already in Picasa, and I expect that's just a matter of time.

Meanwhile...

To upload a photo to Google Photos / Google Plus, simply click on the "Photos" link in the Google navigational bar on the top of your Gmail, Google Plus, Gtalk, Google Reader or similar app. On the resultant page look for this:

I'll click on it and drag a photo onto the nice, big target area:

The photo uploads and, so far, everything looks good. A click on "Add photos" and the photograph is added to my existing album "Interesting Photos".

Even better, I can easily share this photo, add a comment, change who gets to see the pic, etc, all ready to go with my Google Plus account. Done? Click "Share".

If I go back and look at this album in Google Photos, however, I can see an overview of the images...

But there's no way to get to the embed information here. This means we're stuck.

Or are we?

Turns out that if you go to the old Picasa interface -- click here: picasaweb.google.com -- you can indeed find all those long-lost links and additional helpful features!

Once I go to the Picasaweb interface, I see all my albums again:

This time I'll again click on the photo on "Interesting Photos" and will see the three photos in this album again:

The difference is that time time when I look at an image, there are a lot more options and possibilities:

It's pretty small in that screen pic, so I'll zoom in on the relevant information on the right side of the photograph:

It's still confusing since I do want to click on "Link to this Photo" to find the embed code, though it suggests that I'm just going to get a URL I can email people. One way or the other, click and you'll see the HTML code displayed. Finally:

And just for completeness, here's the code Google gave me:

and the result:

From Interesting Photos

Nice. But ridiculously complicated.