Is Blockchain.info Open Source? I know that there is a github public repo, but I'm not seeing a license file. The Android client is GPL3. Anyone know about licensing for the main site's code?
All parts directly involved with the wallet service are open source. On the github project page the repositories My-Wallet, My-Wallet-Integrity-Checker and MyWallet-RPC-Communicator is BSD licensed. 

The repositories My-Wallet-iPhone, My-Wallet-Android are GPLv3.

However the database backend and some other parts of the site are not open source. This will change at some point in time, but there are some things I want to finish first.