The best bit of The 'Arms for me is the way threads such as this spread laterally as they move forward, grow and educate. ( Eg. Accretion and contranym have been added to the list of words currently swimming at the front of my brain!)
Taking the time to look up odd words certainly increases knowledge, even if those words are not in common use. Recently, playing 'Bananagrams', two words of the day turned up- excoriate and turpitude, the latter just rolls around the tongue!
So different from other forums where comments or replies are poorly constructed, misspelt, lack or misuse punctuation and use words incorrectly.
Common errors such as loose for lose, misuse of their and there and a new one that popped up recently - I'am, subsequently copied by others in the same thread surprisingly annoy me.