The version 0.0.14 of my extension is now out, it currently:

• show a full page warning with a link back to Steemit
• show an alert dialog every 15 seconds if you decide to stay on the blacklisted website or dismissed the full page alert
• change the Steemit.com external link marker from grey to red for better visibility
• highlight blacklisted (scam) links in red and stricken through

Available here:
https://steemit.com/utopian-io/@quochuy/steemed-phish-v0-0-14-is-out-a-chrome-extension-to-protect-yourself-from-steemit-like-phishing-scam-websites