I think it'd be a good idea to keep track of reviews each person makes. I don't always remember what manga I have reviewed and what I might have said about them. My opinion could change after a while and would like my reviews to reflect that. It would also be useful if I liked the review of one particular person and wanted to see what they wrote about other manga. There is a Reviews section on the sidebar, but I can't search too far back or for an author of a review.

I think that's a wonderful idea! I've done hundreds of reviews by now, but I can't remember of what. It would be good to go back and see. In addition, I bet I could find more good manga to read through the recommendations that appear on the right of the pages of the manga I liked.

Generally, people use the "comment" option on the series page in lieu of the "review" option. If a user wants people to be able to track their comments, they can make their lists public with the "show comment" option enabled (for example).

If you would like to track your own comments, you can do likewise.