Due to the constantly evolving nature of Web-based Education (WBE) it is often difficult for educators to understand the issues, challenges, impact, and effort required to introduce WBE innovations. This lack of knowledge can contribute to the limited adoption and less than successful implementation of WBE innovations. This paper draws on an aspect of innovation diffusion theory to propose a model through which educators can evaluate potential WBE innovations. It is proposed that this model can aid educators increase their awareness of potential implementation issues, estimate the likelihood of reinvention, and predict the amount and type of effort required to achieve successful implementation of specific WBE innovations. The worth of the model is demonstrated by drawing on past experience.