Kevin at Wizbang has some excellent advice on how to get a post from Glenn. I think it's spot on. Of course, never having had one, my thoughts are pretty cheap here.
I also tend to eschew linkage of this sort because I'll never be satisfied with the quality of my work, so why advertise that fact?
Then again, blended puppies and sech get linked there, so what the hey.
I've been the beneficiary of 3 Instalanches in my 9 months of blogging, including one that is currently going on. In all three cases, the most important thing was timeliness. For the first two, I had written somewhat impassioned posts about Congressman Charlie Rangel's proposal to reinstitute the military draft, from the perspective of a father of a soldier-to-be. One of Glenn's regular correspondents noticed them and passed the link to Glenn.
Today, I decided to blog my way through Hurricane Isabel down here in NC. I sent Glenn a note that I was going to do so and he posted a link to me.
The real secret is to blog about something that will add value for Glenn's readers. First-hand accounts of current events appear to get a close look from the Instaman.