I discovered today when I went to make an urgent skype-out call (forgot my mobile and work phone needed rebooting) that my remaining 7 euro balance had expired. Ironically it appeared on my account as a "purchase": 1 balance expiration, status: "delivered". Cheers skype. Yeah I know it is probably in the small print, I did buy my credit over a year ago, but annoying all the same, especially as it only ran out a few days ago and I actually needed it today..