My three biggest peeves come under the common courtesy category:
1. RSVP How difficult is it these days to shoot off a quick text, e-mail, tweet, or Facebook event response, or if you're not a fan of electronic media, a quick phone call or even a note in the mail? Wouldn't you like to know if you need to cook or cater for 5 or for 50? Of course you would. Since when does a hostess have to chase down the invited to see if they are coming or not?
2. Show up If you have sent an RSVP (good for you!), then bloody well be there unless you are dying. OK, I know those emergencies come up (and it better be an emergency) so make sure that you can reach the hostess to give her a last minute cancellation but again, it had better be an emergency. Deciding you just don't feel like going is downright rude.
3. Send thank you notes It's lovely to get a note in the mail after the aforementioned events for which you RSVP'd and showed up, but it's more important to send a thank you note when you have received a gift. I prefer handwritten notes but I'd rather get an e-mail or text than nothing at all. It's not that I'm looking for appreciation, it's acknowledgement. Yes, you received the check I sent for your graduation or yes, you received the gift I sent for your birthday/Christmas/whatever. I'm thrilled that you liked it, but I'm even more thrilled that it made it to its destination. The number of things that get lost in the mail or stolen from the doorstep are alarming.
OK, rant over. Let me show you the Pet Peeve of the Day (or it's actually ...of the last five months):
This is the view from my kitchen window and it is driving me bonkers. I don't know what room this is in my neighbor-across-the-fence's house but can you please straighten the blind and do something about those curtains? There is a light on in this room every night so you think they'd notice that things were askew? Obviously not.