So, a low priority, general alert, could be used to push news... but for not important messages twitter is just more user friendly

Twitter messages fossilize way too fast however, unless you go to profile pages (which takes a lot of time), twitter messages are usually buried in a matter of minutes, regardless of their importance (tweets about the latest TV shows top the re-tweets charts, real news never does).
Having something more focused could be useful.
There's one more feature we'll all want: the records! showing the largest primes so far!
I'll see if I can make a quick implementation inside the client, so you could just query it.
Will super-block report a higher than normal difficulty?
If so, I could find the record-breaking blocks directly this way