in order of asking
no idea how many on the list, as new ones come online everyday, that is why the rule was written no pop ups or unders, so that it covers everything, no cash links covers the rest
very rarely imagehosts respond to our requests, so not many get removed (if anything more get added)
quite a few get reported on a regular basis, (at least 1 daily)
we get no money from imagehosters
as far as I am aware there are no imagehosters that fulfil our requests to sponsor us
yes it is far better to host images here, and use the thumbnail system if posting multiple pictures