diversify
some in a local wallet, some in a cloud wallet (mybitcoin or instawallet, and other sites like witcoin or youtipit) and some on an exchange.
see the article about setting up a secure btc savings wallet with truecrypt.
Good idea tbh, I suppose doing it that way prevents you from losing everything if you do get your wallet stolen or account hacked. Already got my wallet encrypted just in case though
