Customize your online community
Some people has the idea that just because ParaInvite integrates with JomSocial (or CB), it is considered a sub-component and should be cheaper than JomSocial itself. That is a very warped way of thinking, and cannot be further from the truth.
Imagine another viral marketing solution that functions exactly like ParaInvite, minus the JomSocial integration. It will be a lot less useful, and much more easier to develop.