Review article is a unique and an important category of publication serving the scientific community, but the recent trend of a rapid increase of such articles published in different journals is alarming because majority of them fail to contribute to the science and its development to a significant extent by providing new elements. Requirements of authors contributing to any review articles include prior direct working experience and understanding of the subject matter to significant level. The article contents shall be a collection of published papers first, and then more on evaluation and synthesis of the available literature. In addition, both problems and opportunities together with future directions of the research subject shall be offered to foster the future development. Unfortunately, many of the recent published ones have some level of coverage superficially, but clearly fail to provide insightful information for science in a significant and important way to make a substantial contribution to the research advancement.