(no subject)

[upthera44.livejournal.com]

Which is correct:

Жду твой ответ.

or

Жду твоего ответа.

I was under the impression the verb ждать (to wait) was used with accusative, but I'm noticing it is often, and maybe always, used with genitive to mean "waiting for something".

Serdetjnyj privet

[marta-mb.livejournal.com]

I am sorry if it's a silly question:
Serdetjnyj privet
- is it a good way to end a letter to a friend?
Any other ways to finish a letter?
Spasibo!