If you are a society having problems keeping up with blog postings, then a number of societies have a solution for you!
Why don’t you do what the Alberta Family History Society and the Ottawa Genealogical Society have done – designate a number of people to write blog posts, instead of just one person doing all of the work? Spread the responsibility around to a number of potential bloggers in the society.
Here are the websites of the two blogs -
The Alberta Family History Society blog at http://afhs.ab.ca/blog
The Ottawa Genealogical Society blog at http://ogsottawa.blogspot.com