The ability to target multiple groups of people in different ways at once is great! I've been very happy with how it has helped us reach more customers than we'd otherwise be able to reach by way of our current marketing methods. Nothing really, they are good for what you need them for but nothing that's worth complaining about so far. If someone asks me any questions about their service I respond honestly - if there isn't anything specific wrong then don't worry too much. We have tried other services like this before, some were ok others not as helpful or effective as infogeneie. It was only after trying out several solutions did we find one where everything fitted together perfectly including having enough time left over each month from pre-paid plans.