I decided to deactivate the Sidebar Widget due to traffic-reasons.
It's not all that comfortable to let it load every time you click some post.
But I wanted to hold on to the 'widget' in some way, and that's why I used this sub-page.
In comparison to the sidebar-widget, this page should be a lot more comfortable.
It calls back the latest 25 Tweets (the sidebar-widget only showed the latest 5) and, of course, seems less constrained.
For those who want to go straight to my Twitter profile, there's also the Twitter-Button on the top-right.