MetaMask has phishing detection support.
Visit https://www.betamark.com and you'll see something like the screenshot below. Would be a nice feature to add to our dapp browser.
It's important and as I said in the Monday meeting a few weeks back, we need to develop into a full fledge browser and not a webkit front-end. Other features like tab browsing, book mark, reader mode, password manager etc might eventually turn us into a browser.