Some blogs have a “kitchen sink” approach to collecting blogroll links, and I often come to them when I’m looking for something new (JD2718’s is good) but I approach my blogroll with a “museum curator” standpoint, which means sometimes I have to rotate the exhibits. I have put in a fresh batch of 7 and added the old links to the annotated blogroll. (If yours has been left out, please don’t interpret it badly. This is just a selected assortment out of many very good blogs.)
I also have added a “puzzles” section, which is mostly filled with Nikoli-style puzzles. If you don’t know what Nikoli-style means, please try the links: you are missing an entire world! I would recommend starting with Grant Fikes. One the blogs (Mokauni’s) is in Japanese; save it until you are fully comfortable with the standard puzzle types.
I would also like to take the opportunity to mention I am taking a leave of absence next year to join the faculty of the University of Arizona. I will be working with elementary and middle school teachers teaching them how to teach mathematics, and developing an online curriculum to do the same.