So, that quote says it's the most common, but none of you seem to be using it. Why are you guys using tubeless ready instead? What's different/better about one compared to the other?
You can use tubeless ready tyres on most rims, as long as you use the conversion kit. If you like there are three main ways to go tubeless, without resorting to ghetto, but I 'll get to that in a bit.
1. Stans tubeless strips (not to confused with Stans tubeless tape) are like half an inner tube with a valve attached. Other makers also do them, such as Bontrager. They sit in the well of the rim, sealing air from the spoke holes, but also help the tyre to seat in the rim. You can use them on some ordinary rims.
You are best using tubeless ready tyres as they are less porous and have a consistent bead that will seat under the rim clincher. You seat the tyre on the stans strips, then inflate and add latex fluid. The strip is pushed into the clincher by the tyre. The latex fluid contains granular material and this creates a seal at all points where air escapes, and after a few minutes forms a perfectly airtight seal. Using a conversion kit like this gives you the performance advantage of tubeless but without the weight benefit.
2. Tubeless rims with tubeless tape and valves. I'll use Stans as the example. The tubeless rims are wrapped with very adhesive, thin strong tape. This seals the spoke holes. You then push a tubeless valve through the tape and out of the valve hole. It screws up tight and has a rubber flange to make it airtight. You then put tubeless ready tyres onto the tyre and pump until they seal into the clinchers on both side. You then deflate them, and inject 60ml of fluid per tyre in through the valve stem (they screw in half) and repressurise them. They're very simple, and give both a performance and a weight benefit.
3. UST on UST rims. These work like car tubeless, where the tyre seats in a tubeless rim and seals without sealant. They reason no one uses them is that they are much heavier and more expensive than Tubeless ready. I can't see the point personally. Others may disagree.
Ghetto is a sort of cheap version of 1. You can theoretically use any rim, as you use a 20" BMX tyre, which you stretch onto a 26" rim, seating the valve as normal, and then slice it open along the outside diameter. You then seat your tyre on top of the BMX tyre and pump it up. The BMX tyre forms a seal between the tyre and the clincher. You fill it with sealant and trim away the excess bmx tube which is visible outside the tyre.