Is it okay to publish your own journal articles on your website? Won't you violate any copyright? No problem! Publishers are quite flexible if you let them know you are just going to include a copy of your article on your own website or on your institution’s website, according to the most recent entry in the Open Access Anthropology Blog.
But important: Many publishers ask the author to transfer all copyrights in the work to the publisher. Don't give them all copyrights! They quote Peter Hirtle who in his article Author Addenda: An Examination of Five Alternatives proposes an author’s addendum — "a little bit of legalese that you add to the agreement with your publisher and sign that lets you save the rights you need in order to make your work open access".
>> read the whole entry: Author’s right agreements: how to make them work for you
For example when I published the (rather short) article Cosmopolitanism and anthropology/ in Anthropology Today, it was no problem to delete the second part of this part of the copy right agreement:
In consideration of the publication of the Article in the above Journal, I hereby warrant and undertake:
a. that this Article is an original work, has not been published before and is not being considered for publication elsewhere in its final form either in printed or electronic form.
SEE ALSO:
antropologi.info Open Access Anthropology Special
This entry was posted by admin and filed under Open Access Anthropology and Knowledge Sharing, anthropology (general). 
I commend Lorenz for initiating debate on the topic of journal copyrights.
ANTHROPOLOGY TODAY has a policy in place not to republish anything already published (including items placed on the web). For the sake of eliciting lively debate, however, I have made the one exception in this instance of our lively Lorenz by commissioning from him a (non-peer reviewed) conference review that I understood he would also place on his web-site.
Our copyright form is under review, as are copyright forms for most journals in today’s fast-changing world. The new form will continue to have copyright assigned to the Royal Anthropological Institute, but it will permit AT’s authors to place a version of their article on their own personal website after a comparatively short period of time.
I remind readers of anthropologi.info, however, that ANTHROPOLOGY TODAY is published by a not-for-profit charity that depends entirely on its journal and membershp revenues for its continued existence, and that commits all its earning back into servicing the discipline.
Gustaaf Houtman
Editor, ANTHROPOLOGY TODAY