Why I am opposed to bad implementations of Multisig on online Bitcoin Wallets:

I don't like that they can PREVENT you from accessing your own coins for any old bogus reason down the road. ( Like disappearing into the dust, for example. )

This is true when they have one pkey and you have one pkey and both are required, as one example of a terrible Multisig implementation.

( By the way, this risk, and thus my criticism, is even *worse* with old-school totally online wallets like Coinbase. )

I recommend the new "never stores anything" approach... where the site has NOTHING about you or your wallet at all.... of wallets like RushWallet and EasyBTC.

http://kryptokit.com/rush/
https://github.com/xorq/EasyBTC

By the way, with something like RushWallet or EasyBTC, the site/service/publisher doesn't even know your public key or Bitcoin Address !! It gets access to *nothing* about you or your bitcoin wallet ( except maybe solely your IP address in their server logs, if you don't use Tor, as any website does).