Thanks. That's one for and one against, so it seems we are keeping the 
status quo (separate planets).

When blogs cover both (like propella.*, recently suggested for planet 
squeak by Bert) I'll try to subscribe them using topic-specific feeds if 
available, otherwise it will be a judgement call whether to subscribe them 
to just one or to both. Your corrections and darcs patches will help keep 
this current.