I'm a Sr. Developer at a Fortune 100 company. I don't think I'm the best, and I don't think I'm the worst; I just try as hard as I can to earn the knowledge to make myself valuable to the developer community, and to my company.
My primary (and preferred) language is C#, but I have extensive experience with PHP, HTML, JS, Java, SQL, etc. I own (for better or worse) millions of lines of code written in dozens of languages, but I don't consider myself a true expert in any of them.
I've used StackOverflow for around a decade, but I am not a copy/paste developer. I try to understand code before taking other's ideas and implementing them as my own.