REST API Questions

Hi,Lithium Team:

I have some questions during my development work on the rest api,anybody can help me?

1.How to get topics and count in a board without top topics?

2.How to get topics and count in a board with only top topics?

3.Some method looks working not correctly,for example:the threads/top method of Board,it returns the all threads in the board(include top and not top threads),the example api url:
http://tapatalk.demo.lithium.com/tapatalk/restapi/vc/boards/id/testboard1/threads/top

4.Maybe need more detail search feature description for implementing the question 1 and 2 requirements?The description about search feature in handbook is not detail and clear enough.

5.How to add thread view num?

6.How to mark thread as read instead of someone message of the thread?