I immediately wondered: how and why did Woofer post my Twitter picture? I didn't type in any password. But I was signed into Twitter, so perhaps that's why it was able to grab my picture, I reasoned.

To test that theory, I submitted another woof but this time I typed in the username of a different Twitter user, one whom I have never met in person. That person's Twitter profile picture showed up next to the woof, effectively allowing me to this individual.

Woofer appears to be fixing this problem, though. As of Monday morning, most new posts are now accompanied by a picture of a little blue dog, rather than a real Twitter profile image.

Woofer does require at least some originality. At one point, I tried to woof by typing the letter "d" a bunch of times and then hitting copy and paste over and over again. My attempt failed and I received this message:"No Woof. Really?! 1400 characters and you can only use d? You can do better than that..."

Woofer obviously isn't meant to challenge Twitter in the microblogging, or "macroblogging" space, to use Woofer's term. The parody Web site is run by , a small company in Washington, D.C., which says it specializes in launching "entertaining websites that change the way people use the Internet."