A Lesson in Intuitive User Interface Design

A week or so ago I installed the Firefox extension BetterPrivacy, which lets you easily keep track of and mass-delete unwanted Flash cookies.  After flagging my savegames on Newgrounds so they wouldn't be deleted, I went about my business, periodically checking it and deleting any unprotected ones.

The dialog for confirming the mass deletion is the subject of this post.  The button you click to bring it up says "Remove All LSOs", and the dialog itself is asking whether or not to also delete the ones you've flagged as protected.  Here's what it looks like:

Does it look intuitive at all?  Not to me.  Yes is the default button?  Seriously?  I've never just brought this up and hit Enter, but doing so would delete fucking everything.  I use the mouse on this dialog.  A couple days ago, I accidentally clicked Yes.  Most of the Newgrounds saves were from games I'd played once, maybe twice, and forgotten about, but some represented a fair amount of hard work.  I've got a few of them back now.

I think that this dialog needs to be changed.  Here's how I'd change it:

Note that the default button goes from deleting fucking everything to only deleting unprotected Flash cookies.  In addition, with this design, the buttons are completely clear as to what they'll do.  You'll know that by clicking Delete ALL, you're going to delete fucking everything.  I particularly like that ONLY UNPROTECTED is right in the middle of the dialog, so if you're looking for it, you'll probably find it first.

Also, I removed the keyboard accelerators, because deletion confirmation dialogs really shouldn't have them.  Deletion shouldn't be a process that's easily done with a simple keystroke, you need a proper barrier to prevent accidental deletions.  Things like automatically selecting the choice that won't touch anything are elementary.  However, it's reasonable to expect that a user would bring this dialog up with the intention of only wanting to delete the unprotected Flash cookies.  Sites tend to dump a ton of them and deleting one by one is a pain.  I set the Delete ONLY UNPROTECTED button as default so we don't delete anything the user doesn't want deleted if they just hit Enter.

Also, I'd probably stick a confirmation dialog on the "Delete ALL" button just to make absofuckinglutely sure the user wants to delete fucking everything.

Now, the better subject: What does LSO stand for?  Can't we just call Flash cookies "Flash cookies"?