Imagine the following activity, which we can have as goals identify the peculiarity of a FORUM, a personal diary and hoto make a autobiography. So, we can use the internet as a device to help you in the class.
Firstly you have to take your students to computer, they can search about the Theme chosen and you can help you about the carachteristc of a FORUM. For example, as my chosen Theme is about pregnancy:

  Forum

June 14 – 2:15 pm
MaryAnne Pregnant – 1st trimester Currently feeling : confused Status: offline		I found out I was pregnant a few weeks ago. I’m only 17. y At first I felt totally scared, my parents flipped, my boyfriend stopped talking to me after I told him. Is this normal? What was  reaction when you first found out you were pregnant?
June 14 – 2:16 pm
Hellonikky Pregnant (expecting) Currently Felling: sick Status : offline		People have their judgments and I guess that’s the hardest thing about being a pregnant teen. When I found out I was pregnant I was scared and really worried about my future. My advice is: take it one day at time.
June 15 – 01:09 am
Bp93 Pregnant – 2nd trimester Currently feeling : tired Status: online		MaryAnne, in my case it was a shock to find out I was pregnant. Of course my parents weren’t happy at all. It was really hard. I’m 16 and everybody wants to tell me what to do and not do do…

it's always important the teacher know a little of computers and help the students during the activity. The teacher can explore the task asking to pupils, how is organized the Forum, how can they find out forum about themes who are interested for them. Explore the text suggested, asking them who wrote the fist message, the last one, their real name, beyond to work with simple past.

Now complete the sentences in Column A using the options in Column B

                        Column A                                                                                                 Column B

a)      You can find of text                                                      (   ) forum

b)      It’s a                                                                                    (   ) on the internet

c)       The messages are written                                         (   ) by different people

d)      These people write because                                    (   ) is pregnancy

e)      In this specific forum, the general topic                (   ) they want to discuss a                                                                                             a topic or exchange ideas.

Important, this text was taken from Caderno do Aluno 8ª série/9 ano volume 3, but we can work this activity in High School like I did. Depend on the content you are working.