Short, concise description of the idea
Keep track of the last time a person visited a "View Comments" or lastn page and provide a visual indication that it has had additions since the last viewing.
Full description of the idea
Many communities, such as debate, can have a great deal of comments attached to a post. It would be very nice to have a feature, such as a graphic or text list, indicating which of these posts have comments that the current user has not yet viewed.
An ordered list of benefits
An ordered list of problems/issues involved
An organized list, or a few short paragraphs detailing suggestions for implementation