messengers - less owls, more people

[casmir2012]

No: HPFGUIDX 133604

So many people in this book used personal messengers as opposed to owls 
or something.  Dumbledore used them to contact Harry, Slughorn used them 
for the Slug Club and Draco used them.  

What if Draco had used an owl to deliver the wrapped necklace?

Wouldn't house elves have been more dependable for Dumbledore?  I mean, 
what student is going to want to look through such a huge castle with 
1000 or so students to find just one?

And Slughorn...I guess his makes the most sense.  It was just weird to 
all of the sudden have less owls and so many people messengers.


-Casmir