We conducted a pilot study that used kernel-level packet capture to record the web pages visited by college students and the reading difficulty of those pages. Our results indicate that i) no students were fully compliant in their participation, ii) the number of texts encountered by participants was highly skewed, iii) the reading difficulty of texts was about 7th grade, M = 7.24, CI[subscript 95][7.04, 7.43], though difficulty varied by participant, and iv) the increasing use of encryption is likely a limiting factor for using kernel-level packet capture to measure online reading in the future. [This paper was published in: "Proceedings of the 10th International Conference on Educational Data Mining" (p406-407).]