Green Slime and Rusted Rims

I have been reading a lot about the product Green Slime and Rusted rims. The only knock I’ve seen is that some say it rusts out your rims since it stays wet all the time.

Now, I have used the stuff previously and it works great but I wanted to know if any one has actually seen the stuff rust out a rim or is this claim simply an urban legend.

Additionally, I want to know how many "pumps" us the average per tire.

Thanks in advance.