1 – She should take part only as much as is necessary, so she may put her question or say what she has to say, then leave, and she should not comment except as is essential, because the basic principle is that she should refrain from speaking with men and mixing with them.

2 – Her speech should not include anything that may provoke fitnah, such as jokes, soft speech or laughter, such as writing “hahahahaha” as mentioned in the question, or using emoticons to represent smiles, because that may lead to the one in whose heart is a disease being moved with desire, as in the verse (interpretation of the meaning):

“O wives of the Prophet! You are not like any other women. If you keep your duty (to Allaah), then be not soft in speech, lest he in whose heart is a disease (of hypocrisy, or evil desire for adultery) should be moved with desire, but speak in an honourable manner”

[al-Ahzaab 33:32].

3 – She should avoid giving her e-mail address or corresponding privately with any of the men, even if that is by seeking help, because such correspondence usually leads to emotional attachment and provocation of fitnah. Please see questions no. 34841 and82460.

4 – It is better for a woman to take part only in forums for women. This is safer for her. There are many such forums and there is a lot of good in them. If she needs to take part in public forums then it is better for her to choose a username that does not show that she is female.