Yes this is absolutely new and rocking feature by google. As we all know google is all about ideas so here it goes a new idea again. this time in your gmail signature. These small but useful thing makes gmail smarter than the other mail service provider.
How to do add image in signature?
Its very simple and easy task for which you do not need toe be ankit fadia. All you need to do is goto the settings tab and use the built-in rich text editor to create your own personal signature.
Limitation to this feature:
The only limitation to this feature which i can see is that there is no option to upload image in the editor. Ofcourse you may use picassa but i think there should an option to upload images from editor directly . hope google adds it soon