Thank you for wanting to contribute to the community and giving a gift to people who were not confident of their CVs and resumes. I'm sure you were able to help at least one person drastically change their CV for the better.
Can you elaborate on your "edge" when you worked as a recruiter with a tech background?
In a nutshell, I worked as a developer for a number of years and two key factors seem to have made a drastic difference:
1. Practical industry experience. I understand the full software development lifecycle. I know what it's like to work on boring, unchallenging projects and I like to think know what get's people excited about going to work in the morning.
2. I'm self-aware. I know our industry is universally hated by clients and candidates alike. I understand exactly why our industry has a terrible reputation and I actively conduct my business in the opposite manner to what you may have come to expect from recruiters. I don't 'key word match', money is not my primary focus, I don't try and shoe-horn candidates into roles that won't interest them and when it comes to clients I find out everything I need to know at the beginning and I try to be as unintrusive as physically possible throughout the process.
A recruiter who understands, and has true experience in the domain is invaluable. I wish you all the best!