I discovered two changes in the wiki of codeblocks, where a linklist containing only suspect links had been added to the bottom of the wiki pages. The linklist wasn't visible because the height of the whole list had been set to 1 px. I found this by pure chance (I took a look at the last changes and their diffs).
Here are the changes I made:
Diff of the Main PageDiff of the Help talk:ContentsPerhaps everyone who edits a wiki page could take a look at the bottom of it, where I found the linklist too, and, if there something similar, delete it.
Daniel