Well, at one time the going thing was to use the longer hyphenated urls for search engine to pick up key words. So I set my blog up that way. Then everything I read in WP Codex started suggesting not to use the custom structures, I can't remember exactly why. So I set my newer blog up with p=123, as the Codex suggested (about a year ago), and I use All in One SEO pack to change the title of each page as I create it. I planned eventually to convert this one to the p-123 as well, since WP recommended it. I tried to find the Codex page that suggested the p=123 structure, but I can't locate it now. However, as I recall, it was pretty adamant about not using custom structures.
Anyway I had planned to ocnvert this one and install All in One SEO pack here and add titles for pages via that.
Is WP no longer recommending the shorter URL's? I have been out for some time due to illness (better now), so haven't kept up with the latest stuff. Am trying to get my blog updated.
Thanks.
Lois