Some site maintenance

I have been very lax about performing routine maintenance on this site. Today, I attempted to address that.

I did the following:

- replaced all broken links in my Book Reviews.

- cleaned up orphan post tags

- partial cleanup of underused tags

- fixed the layout so it's a little less cluttered

- edited the About the Author page to keep it up to date

- removed some underused links.

If other broken links show up, please tell me in the comments for that particular page and I'll fix it.

Thanks for your patience using the site.