Yeah, some times I think the seeds and leaches are false, its the tracker that says how many there are, I think some people modify them so there on top of the list. Most of the times the one with 40-80 seeds go the fastest. Seeders are always better there the one's uploading.
I don't know about this accurately. But I don't think so. I use both Yahoo and Google. Maximum time I use Yahoo. But I don't feel any fault. I heard from some one that Yahoo delivers a slow service. But I didn't find mention problem. That is why I think Yahoo is not slow.
It's slow for me sometimes but the majority of the time it always loads just fine. Is it still being slow for you?