One of my relatives today asked me about eBook readers... although I sort of look at them as a gimmick I had recently investigated the capabilities of the Kindle, Sony Reader and the Nook. (While Wikipedia has a whole list of readers, it seems that these three are the main contenders).
I explained that they are better off reading books the old fashioned way and then donating these books to the library or the local thrift store.
But I started thinking: "Hmm these things would be decent for reading papers. Like if I could browse Google Scholar and/or read the arXiv, maybe even subscribe to RSS feeds... then I'd buy one". It seems though that I already poses such a device: my computer(s).
Actually if I could get licenses to read all of my existing texts...