The point of having
labels is to divide your posts into categories. That way, it's easy to find and
read everything you've written on a particular topic. You don't have to decide
on all the labels at this point - just have a general idea of how you want to
categorize your future posts. Help your readers find other posts you've written
by adding a gadget that lists all your labels. I’m sure that a label gadget
helps search engines crawl your site, which is a good thing indeed. Hope this
helps some. This method will help you organize older posts without having to
reconstruct your blog. Then when you create new page you can start fresh.