Guidelines for an effective Thank you note

Sari from weavers in Singapore
Originally uploaded by trudeau

a) Generalities such as "Awesome," are nice but vague.
b) Being specific, such as "Thank you for the $30 check," brings a satisfying element to your note.
c) "Your enchiladas were tender and sweet" is better than "Your food was outstanding."
d) "I learned about Indian garments known as saris and salwar kameez from you," brings important detail to a speaker's thank you note.
e) Being specific and detailed is good writing in general; it's effective communication.