We are looking at Zendesk. Heard good things about it and think it might just be the ticket. I have used the "Free" version, but the $19/month one agent might work for us instead. You get the flexibility of your own email address (your domain).
the website of the future will be a wiki. Simple navigation, lots of content, but based on real impressions of your company by customers, partners etc. instead of propaganda from the company.