As salamu alaikum,
The question regarding the speaking of opposite genders to each other on muftisays is most probably an important issue.
...So i was thinking, would it be better if members names were such that you could not ascertain if they were male or female (a bit like 'aag'!)
(err u can call it virtual purdah if you like)
That way fitnah would not come to the mind in any interactions and Inshallah it won't be an issue.
And Allah Knows Best