DiseaseSymptoms.org presents a design that seems well fit to its topic with a predominantly red color scheme, a well known symmetrical medicine logo and a medical red cross symbol next to a 3D rendering of the word "Medical". Other than that the site is fairly light on bells and whistles and remains rather simple.

A few possible improvements come to mind on just the homepage. A search box for searching the site is missing. Sometimes the upper link ad unit displays a search box which may lure people to it, but it doesn't search the site. Speaking of the link ad, it might be better positioned within the bar holding the "home" link as there appears to be enough horizontal space for it and this would perhaps slightly reduce the sense of clutter already contributed to by the square ads. Also, the advertising block could look better if the ad within it were centered.

Article pages look good, I like the red square style of bullet points, but some articles are a little disrupted when two square ads end up positioned too close to each other. There's one issue with hovering of the "share and enjoy" buttons that I wasn't sure how to describe so I made a screenshot (picture's worth many words):

Finally, I believe it might be worth trying to rearrange the layout of the site to something more efficient. Instead of using three columns it seems like it could easily make due with only two. The advertising block on the right could be moved to the bottom of the left column and the content column could be allowed to expand over the area currently occupied by the right one. Of course it could go the other way around leaving the right column and moving the left stuff to it as well.

Design Rating: 7/10

Focus:

"If its a symptom we will tell you", says the slogan of Disease Symptoms dot org. I suppose that means that if you feel something and wonder it may be a symptom of a disease this site will tell you, which sounds good. In any case the focus is obvious and the content aligns with it consistently. Hypochondriacs beware. ;)

Focus Rating: 10/10

Content:

This site offers over 50 articles covering the definitions of subject diseases, their symptoms, causes and treatment, often using bullet points which make the information easier to read. They're overall fairly brief and so might not necessarily be too comprehensive, but they probably don't need to be for most people. They cover the symptoms, which is what the site's title and slogan promise, and offer additional basic information.

Content Rating: 10/10