There was a talk about folding long planet entries yesterday on planet.debian.org. Erich started it and Daniel came up with a userContent.css hack. You can do the same with the bookmarklet I quickly cooked up and clicking on the bookmarklet again lets you unfold the the entries on the fly too. You can get the bookmarklet from here.

The pdoFoldToggle bookmarlet has a drawback that it does not automatically fold the entries. Another wayout can be another bookmarklet (will the there soon) to be used along with Daniel's userContent.css. The longer entries get folded by themselves and you will be able to unfold them via the new bookmarklet.