Scott Rose has set up an online summary submission system for us. So, write up your summaries in a text file, and then click on the title of the paper in the reading list to be taken to a page that will allow you to submit a new summary or read existing summaries.
Each of your summaries should have the following format (roughly):
Paper title/author One-line summary: Summary of the most important ideas in the paper: The one or two largest flaws in the paper: Relevance today, or future research suggested by this, or ...?:
David Wetherall has put together a great set of guidelines for effectively reviewing research papers; I strongly recommend that you read through it.