Elsevier Patient Research beta

Elsevier has launched a beta pilot that supports patients and their family members looking for medical information; providing access to individual full text journal articles from selected Elsevier publications. The articles are delivered via email for a minimal handling fee of $4.95.

http://patient-research.elsevier.com/patientresearch/about

Permitted Uses

You may access in a given twenty-four hour period a reasonable number of Content items, and you may download and print such Content after it has been delivered to your e-mail address. Such access and use is for your own personal use, although you may also share and discuss such Content with family members and medical professionals involved in your medical care or the care of a family member. You can make further copies for such family members and medical professionals.

Prohibited Uses

Personal use does not include the use by researchers, instructors or students for research purposes or educational use.

http://patient-research.elsevier.com/patientresearch/terms

You can see the list of journals covered at http://www.elsevier.com/wps/find/authorsview.authors/patientresearch

There is a Facebook App, that provides a search box and also lists "popular articles".

It's not clear to me how you search without using the Facebook App.  There are some hits on various articles visible in Google.  The terms of service says

After ordering the article and confirmation of payment, we will e-mail the document to you typically within 2 hours, but no longer than 24 hours.

Facebook App seen via Carol Serroul.