Do not create multiple accounts, aka sockpuppets. Sockpuppetry is often used for nefarious reasons, and as such we ask that you simply don’t do it. If a sockpuppet account is identified, it will be banned immediately.
If you are plugin or theme developer, or a representative of a company involved with WordPress in some way (like a hosting provider), having separate personal and “business” accounts is acceptable, we don’t consider that to be sockpuppetry.