Perl is used in webpages to make them more dynamic. A dynamic webpage can be many things, but it mainly makes a webpage more user friendly to make the page come alive. The most common uses of Perl are:

1. Guestbook
2. Counters
3. Feedback forms
4. Custom homepages
5. Login and passwords
6. Message boards
7. ...and about anything else that you might need to do.