Techniques for providing third party incentivized communications sessions are described. In some embodiments, a Voice over IP (VoIP) conversation is sampled for audio information such as a word, phrase, utterance, or phoneme that may be associated with an advertisement in a database. The database may be searched for the audio information, or in some embodiments a text equivalent of the audio information, and the associated advertisement may be served to a participant in the VoIP communication session. In some implementations, data from or about the conversation may be compiled for analysis.