Back in September I wrote a post about open source software driving the re-birth of “Shadow IT” outfits. Here’s a post that backs me up. Dion Hinchcliffe over at ZDNet cites examples of firms where wikis are proliferating un-checked. While his post is about Enterprise 2.0 and mine was about open source software more generally, the conclusion is the same: IT departments need to move now to facilitate the adoption of these tools or they will be faced with seriously fragmented technology footprints and data silos a-plenty.