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The name Rxplot is actually an acronym, it is short for "Resource for eXamining Personal Logs to Observe Trends".
You may have noticed that the logo contains two snakes making the shape of the letter "X". This is an allusion to the caduceus, ☤, a symbol often associated with medicine. The snakes are particularly relevant to this site, because it was written in the programming language Python.
This is a hotly contested issue at the moment. Some believe that it should be pronounced /ahr eks plot/, with the letter names spoken, whereas others argue it should be pronounced /REKS-plot/, sort of like "rex plot". Proponents of the /REKS-plot/ pronunciation often cite its consonance with the Latin word rex, meaning king. Yet others have advocated the pronunciation /REK-splot/, sounding like "wreck splot", but these people are increasingly rare because they tend to have unexplained fatal accidents.
Of course!
Once upon a time, the name of this website was PharmacoGraphia. The creator thought this was very clever because it sounds like it could be the name of a medical disorder. Micrographia, for instance, is what neurologists call it when Parkinson's patients write and draw really small. On the other hand, hypergraphia is an intense urge to write which may be caused by the drugs that treat Parkinson's disease.
Now, you must understand that the creator really likes all things related to pharmacology. This caused a problem: when he would start typing pharmaco... into the location bar of Firefox, an inordinately large number of bookmarks would pop up. The creator didn't like having to type nine letters before narrowing it down to his own website.
Luckily, the creator is perennially bursting with inspiration, and he thought up a new name quickly: Rxplot. After extensive testing in focus groups at EAsT camPUS desk, he purchased the domain name Rxplot.com. The website was delighted to be moving to a new six-letter dot com domain. The website then married a prince and lived happily ever after.