Rather n00b question regarding IPs

@melancthon:

Is there much point to running my Linode with 2 IPs? I guess a more proper question would be "Why would I need two IPs on my Linode?"

I will not be running DNS on my Linode. In fact, it will run MySQL (local only) or PostgreSQL, Apache with multiple domains, mail, and a game server. Since all of the network traffic goes through the same eth interface anyway, am I doing myself any favors by splitting up some of the domains to use a second IP?
Typically the only thing multiple IPs is useful for is hosting multiple HTTPS (SSL) sites.

And/Or binding services to certain addresses for accounting or other purposes.

It sounds like you won't gain much. It would come in handy if you wanted to run separate services on the same standard ports that you want to keep separate for some reason. But multiple domains can easily be done as name-based virtual domains in Apache, with a single IP.