In this paper, the author proposes a conceptual model with reference to the usage of Twitter as a language tool to enhance the learning of ESL/EFL. Due to the advancements in the technology and social media applications, teaching and learning of ESL/EFL have gone beyond the physical boundaries. This paper discusses the importance of microblog application-Twitter in ESL/EFL learning. The readers will find interesting ways of utilizing Twitter and its various features such as tweets, re-tweets, poll, etc for improving ESL/EFL scenarios. It will also be revealed that the ESL/EFL learning parameters derived from social network indicators -- degree, in-degree, centrality, density, and degree centralization play a critical role in evaluating the ESL/EFL learning. The participation level based on the social network analysis will affirm the improvement in the ESL/EFL learning. Finally, further research insights into the usage of the conceptual model in various settings are described.