[sitepodmatt]

What binaries did MSN Hotmail have? It was the earlier web mail incarnation of outlook.com?

[scurvy]

The Hotmail front-end ran as an ISAPI filter inside IIS.

Messenger had lots of standalone binaries for different functions: CS, SB, DP, etc.

BitTorrent is used in Dropbox, Twitter, MSN, etc to distribute binaries throughout the server platform, not to end users.