Specific to web based application :

1. GUI (Font, Control Alignment, Control Size, Spelling, resolution etc.)

2. Performance-response time  (Page should be displayed/refreshed within certain period of time)

3. HTML tags in text box / text area.

4. Security Testing (e.g. Save the URL, Clear cookies, paste the URL in new browser window, it should not allowed to open, should redirect to login/default page, also Cookies verification), Annonymous Access (Hacking)

5. Link redirections or dead link verification