As those of you who follow StackExchange drama know (StackExchange is the platform that MathOverflow runs on), there was recently a change in how StackExchange sites are set up. Unlike the situation when MO was born, when anyone with a dream and willingness to pay cash could start a site, now they go through a process to ensure that there is community support. The stage of this process before beta is to get people to commit to using the site to show that the community has enough support.
There’s a proposal for a Q & A site on (La)TeX which has now entered this stage and needs supporters to be launched. I think such a site would be an amazing resource for mathematicians (and others, of course), and I really want to see it launched. If you agree and want to sign up, go here.