Hey, I've got 3 Companies! Are you Interested?
It's been called "Multiple Income Streams," but in the Network Marketing profession, I like to call it "Multiple Out Go Rivers!"
Look at it this way, Internet or not, if you take a concentrated focused effort, and split it 3 ways, what do you get? Raise your hand if you want to experience what its like being married to 3 wives!
Inability to duplicate
Flushing your money down the toilet x 3.
Lack of Focus
Labeled MLM Junkie
Lack of Credibility
The list goes on...
I don't know many industry leaders who promote working several opportunities at the same time, the best advice I can give is to build one to retirement stage and then go build another. I don't see the logic in that, because your effort compounds as you build a business, and gets easier over time, you may as well keep working on the one opportunity, exceptions being something happens with in the company and you no longer want to work with it.
Don't take my word for it, do your research! It's hard enough to find one good company, much less three, or five! Or learn the hard way, up to you...
Like Dr. Phil, or Michael Dlouhy would say, "Stop the Insanity!"