Co-founders John DeNardo and J.P. Frantz have announced that SF Signal will close down. As of May 5, 2016 the site will no longer be updated. The announcement was made on the SF Signal blog, in which they say:
The reason is boringly simple: time. As the blog has grown, so has its demands for our attention. That is time we would rather spend with our families. We considered scaling back posts, but it felt like SF Signal would only be a shadow of its former self. So yes, it feels sudden, but a “cold turkey” exit seems like the right thing to do.
The site, which started in 2003, won multiple Hugo awards during its 12 years and 10 months. The administrators say that the site will be hosted through at least the first week of June, and that they are looking for a way to keep its archives up beyond that. For more information, visit the SF Signal site.