Userscripts.org

Allows you to view and change your current "browse anonymously" setting on any page.

Download your answers to OKCupid match questions as JSON. (This takes a while.)

Appends to the title of the page with the mail subject line or journal post heading (if you go to the permalink). This way you can bookmark things effortlessly, go through your Firefox history with the AwesomeBar, etc.

Adds custom keyboard bindings to any web page.

On OkCupid profiles' tests pages, assume you are more interested in results to tests you have taken too, and thus show them on top.

Patches up pages suffering from their lack of html quoting (or sanitizing) of user input, removing b and i tags. (Works with any other site too you don't want any b or i tags on, but you'll have to add the @include rules yourself.)

Lets you split personality award badges into three groups (as perceived by you): the positive, neutral and negative traits. Badges on profiles you visit will then be grouped accordingly.

Shows icons above the profile picture, as per the choices in looking for, religion, drugs, smoking and drinking, for improved visibility of those traits. (Hover the icons for exact answers, if the choice in iconry is hard to grasp.)

Prevent the User Tests section in the sidebar of the OkCupid root page from making the content below jump around, as it cycles through different-height entries, nor pan to the top of the document when clicking pause / unpause.

Adds little checkboxes to all the activity types on the OkCupid home page for insta-filtering the view as you prefer it.

Shows poster name and post title in OkCupid's stupid "this post" journal links.

Links the Compare page from the personality awards section on the profile page, and makes it actually readable:

Makes the journal comment form not overlap actual comments, posts and whatnot.

Turns double newlines in your comments into paragraph breaks

Add more info to QuickMatch screen, such as links to uncropped photos and the user's profile page.

Shows proper distance indicators, travel routes and times to people on OkCupid (c/o Google Maps).

Marks up OkCupid journal pages with the pagination microformat.

Sorry, this is out of date. Feel free to take the code and run with it. Download your OKCupid inbox and outbox as XML. (This takes a while.) Note: The "Saved Mail" folder is weird. I'm not quite sure how to handle it yet. For now, it is still b...

Lets you double click journal comments to quote them and reference its author.

Automatically closes any unclosed markup tags on submission.

Replaces OkCupid's sluggish HTML bell curves with a much faster canvas implementation.

Adds a QuickMatch pane on OkCupid profile pages