At about 1ish lumen over 10" it's pretty dim overall, that is about equivalent (there is no direct conversion) to what a single 5mm supper bright led pumps out...
Of course the numbers will vary but take for instance under cabinet lights, a single 20 watt halogen puck is about 330 lumens, so it would take 330 10" inch sections of this stuff (@ 1 lumen average) or about 275 feet to equal one under the cabinet puck... That is unless you use the green it's about 7 times brighter so you only need 40 feet...
I can see it being OK for accent or night light applications, though...