My responses in blue below:
1. Tags - Can you please explain what you mean by "tags"?
2. Polls - yes
3. Ping O Matic - Can you please explain what you mean by "ping-o-matic" in the context of a turn-based, text-oriented web discussion forum?
4. Track Backs - Can you please explain what you mean by "track backs" in the context of a turn-based, text-oriented web discussion forum?
5. Ping Backs - Can you please explain what you mean by "ping backs" in the context of a turn-based, text-oriented web discussion forum?
6. RefBacks - Can you please explain what you mean by "ref backs" in the context of a turn-based, text-oriented web discussion forum?
7. Search Entire Blog or Forum - yes
8. Rate Blog or Thread - in K 1.6, no, but this feature is being considred for K 2.0
9. Book mark to Technorati - I don't know. I don't think this question has been asked before
10. Rss Feeds - yes
11. Multi Blogs for Multi Authors I think the answer to your question is yes
12. Commenting - yes
13. Tweets - Can you please explain what you mean by "tweets" in the context of a turn-based, text-oriented web discussion forum? Are you, perhaps, asking if Twitter feeds can be embedded in Kunena or vice versa?
14. Social Media Links - yes
15. Does this allow for ads - yes
In terms of K 1.5, the category in which you posted your question, this version is obsolete. It therefore serves us no purpose to answer the question "which ones have I left out" in view of the fact that K 1.5.x has been superseded by K 1.6.4 ... which is soon to be superseded by K 2.0.