I thought I'd weigh in here on GDI. Here's the thing: are you going to make a full-time income with GDI? Well, the payout is $1/month per person in your downline, so if you build a downline of thousands, than I guess you could. But that's probably not what you want to do, eh?
But, that doesn't mean that GDI can't make you massive profits...just not the way you'd think. I personally use GDI as a Funded Proposal tool. Let me explain. When people join GDI with me, they've done three things:
1) Put a tiny bit of residual income in my pocket, and established a relationship with me
2) Identified themselves as a serious, qualified prospect for my main business opportunity...and paid me to do it! (sure beats buying leads, eh?)
3) Equipped themselves with a domain and website, which they will want to have for my main business anyway.
That's the basics of it. There are tons of free marketing methods to promote the GDI business to get those prospects. My personal favorite is
GDITeamBuilder
This provides you with free opt-in email leads for you to double-confirm in your autoresponder. One upload a day, and you've got fresh prospects, a few of those will sign up for GDI, and a few those few will sign up for your primary business.
Kinda cool, eh?