The study aimed to investigate the Arab English language learners' readiness towards and effectiveness of using Web 2.0 applications in language learning process at a university in Malaysia. Using a quantitative research design, 50 Arab postgraduates responded to a questionnaire about their readiness towards and effectiveness of Web 2.0 applications in enhancing their English learning process in relation to genders and level of study. The findings showed that learners' readiness towards and effectiveness of using Web 2.0 applications in language learning was moderate. In addition, it was revealed that YouTube, Facebook, and Skype gained the highest mean scores of all Web 2.0 applications in language learning process. Genders and level of study proved to be significant in relation to the effectiveness of Web 2.0 in language learning process. It is recommended that training on Internet and integration skills be proved to learners of a new language to allow them more reliable resources into their learning process. Further research on the practice and attitudes of educators in using Web 2.0 technologies for teaching English language is suggested.