This article presents a user behavior aware channel allocation scheme for mobile ad hoc networks. The proposed scheme uses a distributed approach to dynamically allocate the IEEE 802.11b/g spectrum. Our main contribution is to consider the user behavior, represented by the mobility, traffic, and node degree to guide the channel allocation process. In addition, we use a mobility model based on the social context found in people sharing common interests. The results show that our strategy presents throughput 15,43% and 17,74% higher when compared with RANDOM and LD algorithms, respectively.