Spreads are fixed. Only during the major news announcements may spreads be expanded.
Scalping:
Methodical scalping (picking) is not allowed.
Grid/Martingale-type strategies and expert advisers are prohibited, because they lose clients' money while overloading our servers.
Expert Advisers:
Most types of EAs are generally allowed, however, certain types of EAs cannot be adequately hedged by our dealing desk, and thus may be prohibited.
See your trading agreement for details.