Hi Logos,
That also depends on who will read your thread here
I think it is not on the official Fx add-on listing, so you have to know where it resides,
and I certainly will refrain from abuse!
I think 40 scans as your maximum daily access will hold.
Similar method I use for the online iFrame scanner,
it is hosted by a private coder
and abuse could make we loose it as an essential asset in the malware fight,
so restricting yourself in these respects pays off always in the end,
Damian