You would do much better to have your support / developer folks just create individual accounts, and personalize them to whatever extent they feel comfortable.
I'm Sandra, I work for YoYoDyne and I worked on the [foomatic] - I have some insights that might make life easier for you using it in this manner.
Make their expertise in the area part of the answer.
This tells people that:
- You actively encourage your employees to create public artifacts out of sharing knowledge
- You aren't a faceless institution of some kind, real people work for you
I'd recommend going on to let folks know it's also okay to answer questions whenever they feel like they can do so, not just about the product, as long as they get their jobs done. I don't recommend using identical gravatars, or putting the company name in their display name. Just make it clear in the 'about me' section of their profiles:
I'm a developer for YoYoDyne Systems, you'll frequently see me in the [foomatic] tag.
Now, it's fine if they would like to create a separate account (if they already have one) to use for work stuff. Just be sure that they use an email address that was never used in conjunction with their main account, and resist the urge to give themselves extra votes.
We don't support shared accounts, having multiple people using the account at once could conceivably trip up some rate limiting and suspicious request detection that we have in place, I can't guarantee the experience to be anything less than frustrating.
Additionally, in the effort to look more 'professional', you'd actually come off as kinda stuffy and overly-institutional. Let your people be themselves, I think both you and they will find the experience more rewarding.