I apologise if this is off-topic.
It seems that the domain name has expired. I hope some member(s) of the community here (I am not one) may know who was the administrator/owner of that site. It was quite a useful resource.
In 2007, Princeton professor Arvind Narayanan created the TOC Blog Aggregator.
Apologies for the downtime this week. This is @random_walker handing over the aggregator code (and this Twitter account) to @geomblog. Thanks everyone for following and special thanks to @geomblog for taking things over.— TCS blog aggregator (@cstheory) November 23, 2018