This document summarizes a research paper on predicting the geographic location of Twitter users using a unified text and network prediction model. The model uses both text-based features from users' tweets as well as the network of mentions between users. It achieves state-of-the-art results on three Twitter geolocation datasets by combining text and network-based predictions through a modified label propagation technique. The unified model outperforms both individual text-based and network-based models for predicting locations.