If the search function(s) allowed it one could search the archives to come up with the definitive answer to this question. But since thread titles don’t always state specifically what the basic issue really is, even the search function(s) might fail to be thorough.
Those who have been around a while probably have a feel for what the most frequently asked questions are, and what issues appear most frequently under various guises.
What can you add to this list?
Recommend a good book
What did you think of this movie?
What’s your best recipe?
What song affects you most?
Why can’t Religion and Science just get along?
What’s the most disgusting TMI topic you can think of?
Does your favorite sexual position ever get you in trouble?
Do you have any close friends who are a) gay; b) Italian; c) Muslim; d) nearsighted; e) abnormal; f) clairvoyant; g) Republican; h) alien life forms; i) etc.?
What musical instrument do you abuse?
Do people in your vicinity all have the same poor people skills or abominable speech impediments as you?
When will Democracy fail?
I’m a nice guy. Why can’t I get a date?
My (boyfriend/girlfriend) broke up with me (long)
EuroDopers, what do you think of America?
I don’t want to go to a doctor, can you diagnose this rash on my genitals?
Why does .99999 equal one?
New kitty! (with pics)
Is this etymology which has a pre-twentieth century word deriving from an acronym true?
What’s your favorite underappreciated film?
Why does .99999… equal 1?
What language is closest to the original one?
What do I.Q. scores mean?
Should I move to [such and such] city?
My friend/significant other has the following [incredibly stupid and apparently original] belief and won’t listen to anything I say to them. Can you come up with some further arguments against this belief, which they won’t listen to either?
Help me identify this song
Sequential thread titles threads
Customer service pittings by dusgruntled customers
Pittings of customers by disgruntled customer service representatives
(superhero/supervillian) vs. (superhero/supervillian) threads
Ask the _______ threads (these seem to have tapered off lately)
Name 100 characters from (series)
Death Pools
So-and-so (notable) has died
Latest Catastrophe / International Incident / Hot News Item
Random Nonsense Pile-on
Pitting of some Drive-by or Guest that gets locked within 10 posts
Why was so-and-so banned or suspended?
Random bizarre news item that National Enquirer will have front page soon
Favorite childhood disease
Something annoying the neighbor did or still does
Failing of Teacher(s) or School Board that Little Johnny (or Janey) can’t learn because of (contains many typos and grammar errors)