Slightly off topic, but I've developed an app for the iPad that will allow a branded portfolio to be shown to people. I don't see it replacing a printed portfolio but rather its something you a) might have with you when you've left the big folio at home and it allows galleries which can be hidden/exposed so its possible to hand it over to a potential buyer with eg: your personal work hidden away, and then switch it back on again if you want.
Hopefully will be reviewed successfully by Apple in the next day or two. Its had about 10 photographers beta testing it, so hopefully there shouldnt be any nasty surprises.
If anyone is interested there is a fairly basic website and a blog
http://www.foliobook.mobi (best viewed on an iPad or iPhone 4). developments can be followed at @foliobook on twitter as well.
Not sure if this is too promotional a posting here, but I thought it might be genuinely of interest to some people, and is a non-profit making venture (at least until or big IF, it starts making a profit !)