Popular social media site Digg is asking users for feedback on a half-dozen potential features, including one that “would represent a significant departure from Digg’s longstanding rules of engagement,” according to Network World‘s Paul McNamara:

A prominently displayed link on the site today asks: “Have a few minutes to help Digg? Take this quick survey and give us the good, bad, and (hopefully not-so) ugly to help us build new Digg features.”

Here’s how it’s described in the survey:

Anonymous Digging – you can Digg and bury stories without logging in to a Digg account, so that it’s as easy as 1-click to tell us when you like or dislike a story. (Don’t worry, Digg has mechanisms in place to prevent a user from Digging the same story multiple times.) You can log in or create an account to save your Diggs.

As McNamara asks in his Buzzblog, um, blog, “[H]ow much confidence will the community have in that ‘don’t worry’ assurance about ‘anonymous users’ not actually being individuals stuffing the ballot box? I’m thinking next to none.”

I’m thinking what he’s thinking. You can read about the other five features under consideration on Buzzblog. Personally, I’d like to see Digg update its topic categories, which appear to be about three years out of date.