Adrienne doesn’t mention what those “neat” features are. And though Adrienne may not find them compelling, a lot of people do, so here are the key differences between the Classic way and the Multiple Site Manager. This way you can make an informed decision.
The Multiple Site Manager gives you:
1. True separation of Sites. This means individual Site preferences. This is the key feature because it means that everything between Sites is separate which allows you to, for example, have completely different Site templates (like Login templates, system messages, member profiles, registration pages…).
2. It also allows you to set individual Member Group preferences per Site. So for example, when a person registers at Site C, then can automatically be put into the Site C member group with their own set of permissions.
3. You can run forums on a per-Site basis that again, allows complete separation between Sites.
4. This is the only officially supported method to run multiple sites. The classic method still works, but its community support only.
Of course, its not for everybody and there are certainly situations where the classic method will work just fine.
The critical key is if you need true separation between Sites or whether having two sites “sort of” separated works for you. Most people who run multiple internet properties, especially when there are communities for each, prefer the separation. The pricing is friendly. Think of it this way. A single Commercial site costs $249. You can run 2 additional Sites for only $199. Each Site there after is only $49 each. Say you had to run 5 Sites. In the past, truly separate Sites would have cost you $249 for each Site because to achieve true separation of those Sites you’d need 5 installations, roughly $1000. If you include the Forums, the cost goes up because you would have had to purchase a separate forum license for each site as well.
With the Multiple Site Manager you can run 5 Sites off a single installation for just $550. So not only do you save about half the price of 5 separate installations, you get the convenience of running them from a single Control Panel. This will save significant time with upgrades, maintenance, etc.. In short, its money well spent if you want to run separate sites from a single Control Panel and save your self a lot of time and effort. Plus you get the tech support you need.
The classic method never replaced the need for separate installations because you can’t really create independent sites that still work together. You can get part of the way there, which is great for some situations, but it wasn’t a real multiple site solution.
The best part is that you’re not restricted to one or the other. You’re free to choose which one works best for your project.