To be honest, I've been quite surprised how interesting people have found stuff I consider fairly obscure. A lot of it, to be honest, harks back to my undergraduate material or stuff I've read randomly since without it being centrally about my research (though I suppose I do also post about accepted papers - but usually in a lot less detail). Nearly all the recent stuff has arisen out of offline conversations of one sort or another and then sort of built a momentum of its own.

Basically, I'd say give it a go, but maybe pick things you've found interest people in general conversation.