BitTorrent has over 100m monthly users

"BitTorrent, Inc., an innovator of advanced technologies to efficiently move large files across the Internet, today announced a key milestone, growing to over 100m worldwide monthly users of its two software products--the original BitTorrent Mainline, and the iconic µTorrent.
"This is an exciting day for our team. Our vision is to build a complete technology ecosystem comprised of software, content and devices, designed to connect modern content creators with a massive digital audience," said Eric Klinker, CEO at BitTorrent. "This milestone highlights the size of our user base and the power of our software."
Additional user statistics:
Average daily active users: Over 20 million
Average daily client downloads: Over 400,000
52 languages (including English)
Clients checking in from over 220 countries every day"

Source:  Press release from BitTorrent, 3rd January 2011