Bigger PHP applications, such as vBulletin can gain a lot of increased performance from running a PHP op-code cache/accelerator such as APC.
Here are some instructions on how install APC on various systems, my personal experience is with what appears the most common: 32bit CentOS 5 Server.
There are quite a few domain names that I own, and they have to be hosted too. Some are small few page-sites, and others are medium to large. But they will all do just fine with shared hosting-, or virtual private server hosting solutions. And each account is only using about 50% of the capacity.
Individually each account is affordable, cheap, works just fine, and could work with a few parked and add-on domains. But as soon as a site peaks in traffic there could be problems. And some have the potential to do so. However, all together the bills I pay add up to quite a bit. A solution was needed, but the solution must have potential to grow without doubling the costs quickly.
