You know, you don’t actually have to excerpt your *own* blog (unless you really don’t want to post your own work, for fear of being sued for copyright violation by yourself). Excerpting yourself just makes you a blog pimp, cruising for hits instead of sharing what you wrote so we can judge for ourselves whether your writings are worth visiting your site.
Yep, I’m not going out and clicking on all these blogs. Post the whole thing or stay home.
I only do that to let other people see what is in the article. It seems to be common practice here. That, and I make comments and hit links to other stuff posted here. If I were doing it just for links, I’d just post and go.