I had trouble answering this poll, due to the fact that I could check off 4 of the 5 answers. Guess its obvious why I love America's Debate then, I get to feed my addiction.
Disclaimer: This post is not meant to brag, but admittedly some of my pride might leak through due to the wonderful experiences I've been able to have in academic debate throughout my lifetime.
I competed in policy debate in High School for 4 years, with an occasional segue into Lincoln-Douglas if my partner was unable to attend a particular tournament. I qualified for Texas state tournament my junior and senior years. I also competed in speech events, in particular the event known as extemporaneous speaking (this was my favorite). Like
Leder, I competed in Student Congress my senior year and qualified for the national tournament. That experience was an absolute blast. I also competed in events like Model United Nations, Toastmasters, etc.
In college, I competed one year in the NDT format, but changed to CEDA when I started attending the University of Houston. There I had the rare opportunity to resurrect a nationally competitive debate program that had been inactive for almost 10 years following the oil bust. I shouldered the burden of managing 100% of the details of the program, from budget requests, fundraising, travel coordination, you name it. I continued to compete for 4 more years (long story on eligibility, details far too boring to mention here) and then served as director of the program for 2 more before retiring officially and joining the civilian world and beginning my career in information technology. My highlights including being state champion two years in a row and finishing as one of the top 50 debate teams my final year.
On occasion I have attended a debate tournament (mostly college) to provide judging resources that are usually in very short supply. It allows me to give back to an activity that has given me far more than I could ever repay. I know for a fact that I would not be the person I am today were it not for my experiences in academic debate and related competitions.
One of the things I absolutely love about

is the diversity of backgrounds that its members bring to these discussion. As has already been mentioned, many do not have a formal background in debate, but are quite capable debaters in their own right. In the 2 years I've been on this site, I've watched new users enter the realm and have seen their skills grow with each new discussion. Sure, some bad habits creep in here and there, but overall each exchange seems to enrich the community and the argumentation skills of those who contribute.
QUOTE(Amlord)
I think writing skills are more important here than in a formalized debate. Formal debates are often about speaking skills more than content if you ask me.
I would agree with this for the most part, but I would argue that the written skills are also honed in formalized debates. There are a variety of formats that are more extemporaneous than others so your mileage may vary. But I have no doubt that my writing skills were also crafted while I was learning to "think on my feet".