Welcome! And BIIIG is nothing. Look at it this way, you're member number 61544 (or something like that) and I'm just below 20K at 19,xxx. I joind in late December and you now. That's 40k+ members in 4 months!
It's a joke playing on the opening statement made by people in 12 Step rehabilitation programs, for example, "I'm (your name here) and I'm an Alcoholic." This is a very common way for people Alcoholics Anonymous to begin statements to their support group; the first step is to admit that one has a problem.
So calling oneself a "Droidaholic" is just a way to humorously say that you are probably too excited by and interested in your Droid!
Maybe it's an American joke that doesn't translate as well in Europe?
Welcome to DF. You've joined a great site. There's so much valuable info here and very helpful people. Enjoy your stay. This is the best forum for droid owners and now the only forum that I have bookmarked!!