Searches for have skyrocketed recently due to the long-awaited Uzumaki anime adaptation on Adult Swim (produced by Production I.G. USA). The anime, scored by Colin Stetson, finally brings the spirals to animated life.
The superior formats are (Comic Book Zip) or CBR (Comic Book Rar), which are simply folders of images renamed. Most "free Uzumaki Vol 2 PDF" sites actually offer CBZ files disguised as PDFs. uzumaki vol 2 pdf
If you already own it