yahook - first off - thats not his domain
Second - google has some real nice tools if you really want to see backlinks - besides the link: command which is purposely limited by Google - however if you change out the : for a | then you will see what Google really has for a site.
As far as hosts and banning - I think that most people around here know which hosts they are - and there are loads of threads where even the owners of the hosts have come in and talked about it - so a real quick search here would give you a pretty good list
As far as recips and whether a host is banned - I (and Im sure you do as well at hqpornlinks) get a huge amount of submissions every day - and a good percentage of them are non-partner or crappy sites or known cheaters
heck youve even got a list of them over on your board - and Im sure youre not sitting there worrying about those poor cheaters that you decline and their recips