This is a list of some of the major unsolved problems in philosophy. Clearly, unsolved philosophical problems exist in the lay sense (e.g. "What is the meaning of life?", "Where did we come from?"
The New York Times recently published a list of 50 fancy words that most frequently stump their readership. They are able to measure this data thanks to a nifty in-page lookup mechanism, which you can try here. Try double-clicking the word “epicenter”. Since the NYT didn’t include definitions of these words, I decided to post a job to MediaPiston to produce an article defining and using each word in the list.
There are tons of reference sites on the web that can help you find a job or write a poem, essay or story. Here is a list of the best 50 websites for writers. Reference Websites
Check which famous writer you write like with this statistical analysis tool, which analyzes your word choice and writing style and compares them with those of the famous writers. Any text in English will do: your latest blog post, journal entry, comment, chapter of your unfinished book, etc. For reliable results paste at least a few paragraphs (not tweets).