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 [review] button next to 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 rough format:
Paper title/author One-line summary: The (two) most important ideas in the paper, and why: The one or two largest flaws in the paper: Identify two important, open research questions on the topic, and why they matter