Answer: newsiest

AnswerCrossword Clue
NEWSIESTMost full of info
NEWSIESTHaving the most to tell
NEWSIESTMost informative, in a way
NEWSIESTMost informative.
NEWSIESTLike the best letters from home
newsiestNEWSY, full of news
newsiestFull of news, esp. of a personal kind