Linux does have the advantage of the closed ecosystem however, without being really closed. You have the convenience to install everything from repos, thus trust one authority for your security, and scrutinize only the odd app you download from the internet. On windows you have to trust a wide variety of vendors either because they are well known (microsoft, apple, adobe, autodesk, and the list goes on) or because of prior experience, plus scrutinize everything else you need (utilities etc.). And even then, you never know if the download mirror has wrapped an unarchiver with a browser toolbar around the setup program. Even in our small maemo community, you are pretty safe if you keep everything installed from extras. This peace of mind is for me one of the greatest values of the N900. I don't care that I don't have a choice of 130000 launchers, when I can apt-get blindly and be pretty sure nobody steals all my data.