The first thing that I find missing in Yedda is the option to "bookmark" a question and/or answers for future reference. I posted the question in the past and got the answer that it will be solved soon. Here's hoping.

The second thing is the absence of "next" and "previous" buttons in questions' lists. I know it's not that important, since there are links to the various pages in the list, but still.

In a more or less direct link, I feel that I should be able to customize the number of questions each page in a list allows me to see (10 is a good default, but it should be changeble).

I also think that the "thumb-up" system should take into account the feedback of the user who posted the question gives. Maybe the asking user should be able to give moer that two thumbs-ups. Maybe (and that's more reasonable), the asking user should be able to state which answer was the best answer in his view. I think that simply posting a feedback in the string is not good enough, as the post is there to stay. A more dynamic method, resembling the Thumbs-up method, is required.

That's it for now. I'll post more if I'll think of any.