1. A computer implemented method for formatting a user-generated comment for display on a page of a website, the method comprising: using at least one computer to perform steps, the steps comprising: retrieving the comment from a repository; determining whether the comment includes a programmatically identifiable watermark; responsive to the comment including a programmatically identifiable watermark, adjusting a spam score associated with the comment, the adjusted spam score indicating high likelihood that the comment is a form of spam; and responsive to comment not including a programmatically identifiable watermark: determining whether the comment is a form of spam; responsive to the comment being spam, adding a programmatically identifiable watermark to the comment; and formatting the comment with the programmatically identifiable watermark for display on the page.
1. A computer implemented method for formatting a user-generated comment for display on a page of a website, the method comprising: using at least one computer to perform steps, the steps comprising: retrieving the comment from a repository; determining whether the comment includes a programmatically identifiable watermark; responsive to the comment including a programmatically identifiable watermark, adjusting a spam score associated with the comment, the adjusted spam score indicating high likelihood that the comment is a form of spam; and responsive to comment not including a programmatically identifiable watermark: determining whether the comment is a form of spam; responsive to the comment being spam, adding a programmatically identifiable watermark to the comment; and formatting the comment with the programmatically identifiable watermark for display on the page. 3. The method of claim 1 , wherein determining whether the comment includes a programmatically identifiable watermark further comprises: identifying the programmatically identifiable watermark based on one or more Unicode whitespace characters.