Design a subscription form to RSS, or a drop of creative

Finishing “combing” my blog , I could only attach the form of a subscription to RSS. As a result, it was delayed for several hours :)

No, you do not think that I didn’t have enough sense to insert a simple code from FeedBurner :) It’s just that, suddenly, I wanted to make an effective design for this form ...

At first, I wanted to make the form as compact as possible, without unnecessary buttons, headers, etc.
The result was this:

But this was not enough for me :)

It looks compact, but I still needed to place somewhere a couple of meters with the number of subscribers and the Yandex.Leta button. Then, I remembered the article " 5 ways to increase the free space on the page ." Not for nothing translated :)
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The task was to implement 2 properties in one, namely: compactness + maximum content = ideal form. And then at first it turned out that:

When you click on the form, the address field appears.
And already as a result:

If you have a lot of different buttons, you can do something like this: take as a basis a form with a drop-down field, but when pressed, it will not leave the field, but the whole block. And impressive and compact :)

PS If you like the design, then the file with all forms can be downloaded here in png format.