Increased Internet speeds together with new possibilities for tailor-made television services have spurred the interest in providing television via the Internet. Several television services are readily available and both IP-layer and application-layer (P2P) technologies are used. When disregarding commercial influences, customers will choose for IPTV or P2PTV based on the Quality of Experience (QoE). In this paper, we investigate one important QoE measure, namely the content blocking probability. © 2008 Springer-Verlag Berlin Heidelberg.