> 1. It allows downloads to start and stop. No more 90% of that iso then having to start again.

I'm surprised Firefox doesn't do this itself, as in, this sounds like a clear bug. Is there some reason the upstream project by itself doesn't get this right?

> 2. It opens up 4 thingies on the file and downloads simultaneously. So 4 times quicker if the website is restricting bandwidth per connection.

... this works in 2015? I'm pretty sure I remember people trying this and website owners deploying countermeasures in the '90s.

Is this secretly a bufferbloat workaround or something?