I would like to:
1) have the ability to edit or remove my clipmarks.
2) be able to moderate comments on my clip-marks (and block abusive users from posting on my clipmarks).

Thank you.

Hey Steve,

1) You can already delete and edit the comments of your clip from the "File" menu below your own clips. (Advanced editing features have been discussed for the future.)

2) I happen to agree with you on this one. But for now you have the ability to permanently hide comments from "offensive" users by clicking the "X" next to their name. It's not a bad solution. In the meantime, thanks for helping us to maintain a civil atmosphere here, which will hopefully obviate the need for moderation...

Regarding #2, I think a great idea would be to implement a limited form of us moderating the discussion on our clips by giving us the power to "shut down" the discussion (closing off comments). I'm not too keen on banning particular individuals, but there have been a couple of times where commentators have made abusive remarks to one another on my clips and it would have been nice to just shut down things.

2) be able to moderate comments on my clip-marks (and block abusive users from posting on my clipmarks).

You can- it is called "My Blog". And they are easy to make.