It will index all of the visible page content, Meta tags and html comments. Alt Text statements are not indexed in Hotbot. The HotBot spider is not a deep level spider, so if your site contains many sub-directories, be ready to submit your top url and the urls for the lower level directories as well. Again, like InfoSeek and Alta Vista, links to your site will boost your ranking, also your keyword relevancy to page content is important. Documents are ranked higher if a search term is in the title.
Users are more likely to click a link if the title matches what they're looking for.
Choose terms for the title that match the concept of your document. Write your description carefully. After a title, users click on a link because the description draws them in. This helps, too, although not as much as the title. If possible, customize the keywords for each page on your site instead of using one broad set of keywords on every page.