yes, some changes are good...others not so much. when a friend's first son was born (he's now in pre-k) i sent a little package of clothes and toys. i talk to her on a regular basis so was surprised that she had not said "thanks" or even mentioned getting it in the mail. a few months down the line i decided to casually ask her if she gotten it (i assumed it was lost in the mail)...she said yes, but one of the bath toys did not float i guess she just got busy being a new mom, but still, a simple "thanks" would have been nice. lol
other friends are now just saying "thx" on my fb wall when i send them baby shower gifts, wedding gifts, etc. i was a bit shocked at that since i was always raised to send a thank you note within one month of getting a gift.