Internet is not a place for bullies
Well-known websites like Facebook, YouTube and Twitter allow us to express ourselves, post photos and give others a glimpse of our lives.
You can even keep up-to-date with your friends' lives - through photos and status updates - via your mobile phone.
This convenience seems to have improved our lives and relationships, but it has also led to many people acting irresponsibly online.
While we can freely write and share things on websites, and engage in intelligent debate, we are also open to teasing and mocking by others who think they can do whatever they want on the internet.
Many are not aware that there are codes of conduct and laws that ensure responsible use of the web. If you infringe on another person's privacy, or do anything online that hurts others, then you are breaking the law.
Please be careful and don't upload anything inappropriate on websites. Otherwise, you may have to face the consequences.
Marco Chung, STFA Tam Pak Yu College
Dog is truly man's best friend
There is no question that Hong Kong's most popular pet is the dog. I think one of the reasons is that dogs are usually cute, even if the various breeds look different.
Dogs are good listeners, too. They listen to your words and empathise with your emotions. They can give you comfort whenever you are lonely or sad.
Sometimes they will do things to make you smile or laugh. What's more, they don't care if their owners are blind, deaf or mentally challenged - the pets will love them anyway. That's why the dog is man's best friend.
Dogs are obedient. They are loyal to their owners and listen to orders.
I think dogs are like angels. They can light up our lives and melt our hearts. If you like dogs, then keep them. But remember, you must take good care of them.
Chan Hiu-yu, Immaculate Heart of Mary College
Animals deserve our respect
Do people really think things through before they decide to get a pet? In many cases, probably not, as there are cases of animal abuse which are really heartbreaking.
I read a story about a three-month-old dog which was found abandoned in the street with its legs broken, its mouth sewn up and its belly burned. Its eyes showed the untold pain it had suffered. Its owner has still not been found and no one has been arrested.
About two weeks ago, I witnessed a case of maltreatment. When I heard an animal moaning next door, I went to look and was shocked to see my neighbour pouring hot candle wax on the pet.
It's scary that some people can be so cruel.
Pet abuse should not be tolerated. This kind of inhumanity should be dealt with a jail sentence.
I hope the Society for the Prevention of Cruelty to Animals will take immediate measures to address this urgent problem.
Heavier penalties should be imposed on those maltreating animals. People should also be taught from a very early age that they should think hard before getting a pet. It is not just fun and games, but a lifelong mission to care for an animal.
The government could also do much more to promote awareness of pet abuse, such as through ads or TV programmes.
Debbie Ku, Leung Shek Chee College
Helping others is its own reward
I love to help others when they are facing problems.
You may think it is a waste of your time, energy or money to help others, but there are so many people in need, whether poor, disabled, or elderly.
Nothing can match the happiness you feel when you reach out to the less fortunate. You will soon discover that the world becomes more beautiful because of your actions.
By aiding others, you can learn how to listen patiently, how to identify problems and how to help. You will mature as a person.
It can be something as simple as volunteering for charities, visiting those who are in need or assisting someone in carrying a heavy bag. What are you waiting for? Show your love and care today!
Johnson Kwok Yun-kwan, Tsuen Wan Public Ho Chuen Yiu Memorial College