Is it permissible to continue using my Twitter and Google accounts for religious purposes, taking care not to interact with men and limiting communication to women, or is it advisable to deactivate these accounts and suffice with seeking advice in the forums of well-known scholars?

There is no legal impediment to the participation of young men and women in public forums accessible to all, provided there is no violation of Islamic law. It is more befitting for a Muslim woman to be cautious concerning her religion and honor, so she should not add men [as friends] nor accept their friendship. It is permissible to befriend righteous women.