If you'd like to use your real name (which is a good idea for many reasons), please do. And feel free to include the name of your company in your "signature" (which is automatically appended to messages you post). By posting interesting questions and helpful answers, you're enhancing your reputation at the same time that you're helping your industry colleagues.
But if you'd like to use a pseudonym (which sometimes is a good idea for many reasons), please do that, too. Create a second account by (1) logging out, and then (2) registering as if you're an entirely different person. Enter whatever display name you'd like to use (stand back -- "Benefiticus" is entering the forums), and enter an email address that's different than the one you used with your "real name" account. (Each registered account must have a unique email address.) The email address for your pseudonym account could be a gmail.com email address (they're free), or outlook.com, hotmail.com, etc. -- but it should be a working email address that you check from time to time, so that emails sent by the message board software don't bounce -- e.g. automatic emails that notify you about a new reply that's been posted to a topic you started using your pseudonym account.
So you could have two accounts -- an account that displays your real name for ordinary use, and an account that displays a pseudonym for those unusual times when you'd like to post a question or add a reply anonymously. You might want to ask colleagues for advice as to what to do when you discover that your dog ate the client's only signed plan document, or that you are concerned that an employer-client may be putting nonexistent names on the employee census, or that you have serious concerns about industry leaders sometimes balking about tax reform just because it cuts into business ... not gossip, but stuff that is true, needs attention, bothers you, or otherwise "needs to be said" for the good of the realm.
Let me know if you'd like details or screen shots. Thanks!