Site Collection versus Site

There are ocassions when you ask yourself if it makes sense to create a new site collection or a new site. The question may look simple to many but a bad decision may have serious consequences. Many organisations keep only one site collection and add a lot of sites to it leaving no room for scaling. Site collections have several advantages such as distributed administration. Dave Wollerman wrote an excellent article explaining the advantages of having multiple site collections.
Site Collection Logical Architecture