The picture an employee at Canonical shared a screenshot of him doing the same search and he is getting some suggestions.
I did the upgrade just now, and I am fully up to date with the latest Ubuntu 12.10 packages. Now let see if I have those same suggestions.
Personally, I don't think push advertisements will do any good for me. However, I also think integrated search results will help Ubuntu to expand better. People in the Internet Marketing is going to like this a lot. I could see millions of dollar flowing through Unity. Anyway, we could always disable the ads by removing the lens. I single row “sudo apt-get remove unity-lens-shopping” in terminal will just clear it out.
Other reading on this topic: