Great app :) Has kinetic scrolling and even mouse gestures, with which you can open URLs in posts:
Move to the right - Open a post/thread (Jaiku only) Move to the left - Close Mauku (in Overview) or thread Move to the left and up/down - Scroll all the way to the top/bottom Move to the right and up - Show application main menu Move to the right and down - Show context menu for a post
So, if you want to open a URL from a post, either do tap-and-hold or move to the right and down to open the menu from where you can select the URLs.

Really great Twitter client. I wish more apps had an interface so well tohought as this!
My only gripe is that Jaiku support should be removed, since it's officially dead and gone. Less menu options = better navigation.