Quoting from the web site's main page at http://ancestry24.com/closure-of-ancestry24/:
We regret to advise that the Ancestry24 business will close on 28 February 2013.You can read more at http://ancestry24.com/closure-of-ancestry24/.
After this date, the web-site www.ancestry24.co.za will cease to function.
With regard to any premium subscription, which was planned to continue past 28 February 2013, we will be refunding the entire subscription amount that you paid to us. This effectively means that you will have been able to utilize the premium access at no charge during the portion of your subscription that is expired at 28 February 2013. We trust this relieves the inconvenience.
My thanks to newsletter reader Rick Aindow for telling me the news.