Installer 5,55MB, installed size: 20,6MB. That's not pico, more like mili- or centi- as compared to uTorrent. For comparison, another open source bit-torrent client Halite (https://github.com/Eoinocal/Halite) weighs at 2,34MB (installer) and 12MB installed.

Installer didn't even ask where I want to install it and did not display any success message, informing about successful installation. Needs more install options for power users. Also portable (zip) version would be a big plus.

More comments more, maybe, because PicoTorrent fails to work in Sandboxie.