spamcop blacklist considered useless

In the world of spam countermeasures there are Realtime Block Lists, lists of IP addresses (= mail servers on the 'net) that are considered to be in violation of some policy, e.g. too much spam, breaking some internet standard or whatever. These lists don't require you use them, and they don't even otherwise interact with mail delivery: they're purely a third-party opinion. Based on their effectiveness you consult them or don't.

I've just discovered a whole pile of what I consider legit mail having been filed in my "Warning" folder (which is usually almost entirely spam) because spamcop.net's blocklist has Google's Gmail service blocked. It's kind of pathetic reading the spam zealots defending this based on numerical analysis. Yes, Gmail servers have been used to send huge gobs of spam but considering the job of delivering mail practically who really wants a list that blocks a massive mail provider's feed? They've also blocked yahoogroups. I mean, really, come on guys, reality check!