If they have to do with the kids or family logistics, answer immediately, but without drama or any add'l detail.
"OK, thanks -- I'll come pick them up now." "OK, got it." "Thanks for letting me know; we'll talk more later."
If they have to do with your relationship, your marriage, legal, or simply if they don't have to do with much of ANYTHING AT ALL, you are under no obligation to reply. You can either ignore them entirely, or -- what I prefer -- that you randomly answer every 3rd or 4th one with a chirpy "Sorry, just saw this -- yeah, that's a hoot." or some such. It shows more confidence.
