I’ve been on Twitter for a few years now, and over that time I’ve watched not only its mass adoption, but also how people changed their communication habits. One of the most unexpected changes (for me) is how many people now use Twitter Direct Messages as instant messaging.

It’s actually a great feature – with IM someone needs to be online and using a synchronous client, but you can drop a DM anytime you want and, depending on their Twitter settings and apps, it can follow them across any device and multiple communications methods. DM is oddly a much more reliable way to track someone down, especially if they link Twitter with their mobile phone.

The problem is that all these messages are persistent, forever, in the Twitter database. And Twitter is now one of the big targets when someone tries to hack you (as we’ve seen in a bunch of recent grudge attacks).

I don’t really say anything over DM that could get me in trouble, but I also know that there’s probably plenty in there that, taken out of context, could look bad (as happened when a friend got hacked and some DMs were plastered all over the net).

Thus I suggest you delete all your DMs occasionally. This won’t necessarily clear them from all the Twitter apps you use, but does wipe them from the database (and the inboxes of whoever you sent them to).

This is tough to do manually, but, for now, there’s a tool to help. Damon Cortesi coded up DM Whacker, a bookmarklet you can use while logged into Twitter to wipe your DMs. Before I tell you how to use it, one big warning: this tool works by effectively performing a Cross-Site Request Forgery attack on yourself. I’ve scanned the code and it looks clean, but that could change at any point without warning, and I haven’t seriously programmed JavaScript for 10 years, so you really shouldn’t take my word on this one.

The process is easy enough, but you need to be in the “old” Twitter UI:

  1. Go to the DM Whacker page and drag the bookmarklet to your bookmarks bar.
  2. Log into Twitter and navigate to your DM page.
  3. If you use the “new” Twitter UI, switch back to the “old” one in your settings.
  4. Click the bookmarklet.
  5. A box will appear in the upper-right of the Twitter page. Select what you want to delete (received and sent) or even filter by user.
  6. Click the button, and leave the page running for a while. The process can take a bit, as it’s effectively poking the same buttons you would manually.
  7. If you are really paranoid (like me) change your Twitter password. It’s good to rotate anyway.

And that’s it.

I do wish I could keep my conversation history for nostalgia’s sake, but I’d prefer to worry less about my account being compromised. Also, not everyone I communicate with over Twitter is as circumspect, and it’s only fair to protect their privacy as well.

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