Craigslist does not have a public profile option for its users. In fact, you don't even need to have a Craigslist account to post an ad, since you can manage all your ads through your email account. That being said, people who post in the discussion forums do have to create "handles" or user names. When you click on someone's handle, you will see when the person created his handle, how many posts he has made and his email address.
Go to "craigslist.com."
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Click on "My Account."
Sign in to your Craigslist account. If you don't have one, you can create one by clicking on "Sign up for an account" at the bottom of the page.
Click on "Craigslist" in the top-left corner of the page.
Click on the "Discussion Forums" heading.
Click on "Add a handle" in the top-right corner of the page. You cannot view other people's handles unless you have one of your own.
Fill out the "New Handle" form.
Click on the "Submit New Handle" button at the bottom of the page.
Click on "Return to the forums" in the top-left corner of the page.
Click on one of the forum topics.
Type the name of the person's handle you are looking for or the email address she uses on Craigslist in the box at the top-right side of the page.
Click on the "lookup" button.
Click on the person's handle. You will see her profile at the top of the column on the right side of the page.