If you have published in an APA (American Psychological Association) journal and posted the article PDF to a website, you may have already received an email from APA lawyers asking you to take that PDF down:
I write on behalf of the American Psychological Association (APA) to bring to your attention the unauthorized posting of final published journal articles to your website. Following the discussion below, a formal DMCA takedown request is included with URLs to the location of these articles.
The APA is likely within their legal rights here, but there is a way to continue making your work freely available to the world. Upload the final accepted version of your article (your final revised Word document, if you wrote your paper in Word) to your website or, better, to the university repository or to another repository such as PsyArXiv (I am on the Steering Committee of PsyArXiv). Your personal website is not the best option because personal websites tend to be transient, not always properly indexed by the likes of Google Scholar, and some publishers don’t allow posting to personal websites but do allow posting to repositories.
The APA policy allowing upload to repositories says that you must add the following note to the version you post:
© 2016 American Psychological Association. This paper is not the copy of record and may not exactly replicate the authoritative document published in the APA journal. Please do not copy or cite without author’s permission. The final article is available, upon publication, at: [ARTICLE DOI]
As the note says, the APA owns the copyright to your paper, not you. Many of us would like to see science transition to open access publishing, in which we do not sign our copyright away. You have probably noticed some success on this front in the domain of starting new journals (e.g., the open-access journal PLOS ONE rapidly became the largest journal in the world). Changing existing journals is harder because often the publisher owns the journal, even though the editorial board and authors provide all the content that makes the journal what it is. PsyOA is an initiative staking out the principles that we call Fair Open Access and provides information to editors and scholarly societies interested in moving their journal from subscription basis to open access.