Check all links for functionality. Broken links frustrate users, so test all links to make certain that a typo or omission doesn't prevent yours from working. Check the organization of your page. Big chunks of text are generally unappealing to the web user. Consider breaking them up with headings or horizontal rules.
Some users are unable or unwilling to view complex pages with frames or memory-intensive graphics.
Consider constructing a simplified page and including a link to it near the top of your page. Some form of contact link is required for all SPJC pages, and if you want feedback from users, this is the only way to get it. If your page includes timely information, be sure to include a date. You might consider using a rule or other graphic that will let people know that they aren't missing anything. Even tags that are not browser-specific may be interpreted differently depending on the browser and version you view them in.