When people ask me about blogging, one point I make is that it helps to be dependable. If you can post every day fine, but if not try to be there once a week. Otherwise your reader(s) will lose touch. It's standard advice.
But every rule has its exceptions. If you can blog as engagingly as Cynthia at ChicagoGenealogy, then I don't care. "RunKeeper to the Rescue: How I Found Mr. Janes' Grave" is her second post since April and I'm just fine with that. It's got everything: A cemetery, a story, a song, a research travelogue, technology, a town called "Onarga," and a recognition that we are related to people with whom we share no discernible blood tie.
Harold Henderson, "Genealogy for non-relatives," Midwestern Microhistory: A Genealogy Blog, posted 18 September 2014 (http://midwesternmicrohistory.blogspot.com : viewed [date]). [Please feel free to link to the specific post if you prefer.]