And I'll bite back...
You want to send mail.
Your mail is blocked.
Because your ISP isn't policing their own networks and allow spammers to thrive.
What can you do?
Find another ISP that does police their networks and are not blocked.
You have to understand Linford's logic.
The goal is to get the ISP to modify their behavior and be good net-citizens.
You can always start by asking.
Unfortunately there's money on the table (pink-sheet contracts) where the ISP will give you lip service and play games.
You can threaten verbally and again, at best you get lip service.
Finally, you can choose to shun them.
This is where you block their IP blocks until they change their ways.
This is the most effective because you now are forcing the ISP to realize that the money they get from the pink-sheet contract with the spammer is now less than the money that they are losing from other paying customers who's business is being affected.
Now in defense of Linford...
1) Blocks usually start off small. Like a /24 netblock (class C). ISPs sometimes tried to play a shell game by moving the spammer's netblock. So then more netblocks get blocked and if there still isn't a resolution, then larger netblocks are blocked.
2) Blocks are not permanent. If the ISP does the right thing, the blocks are removed.
3) Most ISPs work well with Spamhaus because they use Spamhaus in their mail filtering blocks so that their customers don't get as much spam as they could.
You may not like Linford's methods, but lets face it. They are effective and they are based on past experiences and human behavior.
BTW, if your emails are getting blocked, you are either sitting next to a spammer, or you are the spammer. If you're not the spammer, you can bitch to your ISP. They play dumb and do nothing? Find another ISP. Trust me, its worth it.