oh- and add both of them to your robots.txt file or create a sitemapindex.xml file that then lists both, and then just include that index version in the robots.txt file.

you can create one manually, or use a sitemap generator.  Just be sure to call it something other than the name of your existing WP generated sitemap.xml file - so it could be sitemaphtml.xml or sitemap2.xml

They need to be in the XML format as outlined by sitemaps.org to be recognized by Google Webmaster Tools - and also submit both to Bing Webmaster Tools.

Everyone's partially correct.  Alternate attributes are for images only.  Title attributes in anchor tags can be used in links, however if you are performing SEO best practices, using title attributes in anchor tags is a first signal that you are probably spamming the search engines if not used with extreme caution.

Why?  Because the anchor text (the text you wrap the anchor tag around) should suffice to communicate what you're linking to.  Title text in anchors is best left to only be used when you're using them as a place anchor on a page, not as a link.

there should always be one way search bots can crawl your site to get to the content - even the deepest content. If you've got that in place, any other path can be noindexed, or index/followed.