Yes, you should use it!

MetaMask is more than just an Ether wallet. It's an Ethereum Browser, like Mist! It allows you all the same functions, features, and ease of access from regular Ethereum Wallets, and it allows you to interact with Dapps and Smart Contracts, and all without the need to download the blockchain or install any software, you can just install it as a Google Chrome Extension! Plus, it has a cool fox logo that follows your mouse around, which made us smile.

MetaMask includes a secure identity vault, providing a user interface to manage your identities on different sites and sign blockchain transactions.