If you are a scholar who is on the fence about whether or not to get on the Open Access bandwagon, then consider this: It's your ethical duty as a researcher to share your research. As authors John Willinsky and Juan Pablo Alperin explain in their article, "The Academic Ethics of Open Access to Research and Scholarship,"
The ethics of access have to do with recognizing people's right to know what is known, as well as the value to humanity of having one of its best forms of arriving at knowledge as widely shared as possible. The level of access is often reduced by the financial interests of publishers in a market in which there is little sense of rational order, given huge discrepancies in prices for similar products.
This is not to say that academic ethics requires one to publish in OA journals (although that is certainly one way to go about it) but merely that scholars ought to take a more ethical approach to sharing their work. It is possible to publish in the journal of one's choice and still participate in OA as most publishers will allow authors to upload a pre-print, post-print, and, sometimes, final versions of their research articles into their institutional repository. In fact, just this week I uploaded the final version of an article recently published in Hispania by IUPUI Spanish Professor, Herb Brant. It's already seen 12 views.
In other words, it is suprisingly easy to participate in the OA movement and demonstrably beneficial (to the writer and to humanity) as it promotes readership. But, if you need more convincing check out Willinsky and Alperin's article. You'll find it in their institutional repository.