Do not apologize for an extended absence. No one cares where you were. It's a wasted gesture-- just like your blog.
Do not blog simply because you have not blogged in a while. Your post will be sub-par and will qualify for abortion.
Better yet, stop blogging entirely: your piddling audience most certainly needs to find other sources of entertainment. And, perhaps, get a life.
We suspect the same can be said for you.