Are you kidding? Walking around in the yard pushing heavy machinary while in the heat, sweating your butt off? Uh, yeah, i would think that would count BIG TIME.
I do a lot of gardening and i count that too. Anytime there is movement and i am sweating, i count it. Ha ha.
We have a large hilly yard, and when our old riding mower broke my DH wanted to run to Lowe's to buy a new John Deere. I wasn't too hip on spending that kind of money, so I said what about the push mower? It works. He responded that if I wanted to push mow it, that was fine with him, and that I was now 'in charge' of the yard. Well, I'm a little stubborn, so I got out there with the push mower in the middle of a hot July day and started to push. I was determined to finish the whole yard, and with my husband peeking out the window, I pushed and pushed. Let me tell you, that was one of the hardest workouts I think I've ever had. After about 1 1/2 my husband came out with a glass of gatorade and a sandwich and told me to stop (I wasn't nearly finished). He proved his point, and I felt like I had run a marathon.
My point is that any activity where you have your heart rate up for a sustained period of time (20 min or more) DOES count as cardio exercise, so of course it would count toward your activity points.
I agree with the idea of anything that can break a sweat. Traditional exercise just doesn't always *happen* for me... but if working in the yard can count, and I do count it, then I'm moving my body and it's worth counting.