I like OneNote. It has allowed me to more or less centralise the random and not so random thoughts I have daily into one place as opposed to across many text files, outlook tasks, emails and bits of paper. It proves to be a great app for congregating thoughts for blog entries. However, as the number of popular random thought applications, such as OneNote, Sharepoint & RSS Aggregators increases, and new links between the two emerge, might it not become too easy to use all your time generating and organising these thoughts rather than building on top of them?