I like how easy it was to set up, as well has all aspects that are needed for success (C2Cs). It's very effective because you can send messages in any way or time during day; which means there would be more chances people will answer them! The only thing i dislike about CTCD - its price tag compared if others services out here around $5/month per user but what makes me decide not use this service so far? That they need help from experts who knows their field really good otherwise things may go wrong when setting everything properly together.- Easy setup process-,Easy manageability,-Good ROI-.