According to popular blogger Vernon Go, Unlimited Network of Opportunities International Corporation, or UNO, "is a company engaged in the distribution of health enhancing natural products and other services."
UNO’s products range from a Glutathione soap, capsules and lotion; 8-in-1 Coffee that promotes well-being and boosts the immune system; Ultima-C, a non-acidic Vitamin C; and Fit Right slimming capsules with L-Carnitine, Green Tea and Ampalaya. UNO is also the distributor of Prepaid Pinoy, the newest, safest and most convenient way to sell prepaid cellphone cards.
Even boxing legend Manny Pacquiao is said to be an icon of UNO.
Here are some videos that were culled from Youtube about UNO:
In the end, it's doing the right things (read as "ethical") when doing your MLM bit. As they say, it's your choice to join or not.
For more info, you can also visit the UNO site.