Over 90% of my incoming email is spam. Most of it, about 83%, is captured by a spam filter service I use, the rest is captured by several other heiuristing and sandbox programs including a white list.
Recently I participated in an interesting debate with some of my underground spam fighting brethen regarding the use of such personal spam blockers. The base of the argument is that using a spam blocker is akin to taking aspirin for the prevention of a cold attack while the true orignin of infection is not being addressed. Though I side with the "find a cure" camp many fellow spamwarriors dissent, preferring the "take tylenol" point of view or at least adding "until you can find a cure."
While there may be no cure for the common cold, I think there must be a cure for the common spammer. One of the most creative efforts I have encountered in anti-spam combat is the use of "harvester honeypots" to create severely hostile environments for email address gathering spiders.
The concept is simple and you can help, if you want.
What you do is throw a bunch of "poisoned food" in a "honeypot" for these spamwankers to feast on, perhaps adding in a spider killing infinite loop to guarantee the death blow. Some active page generators exists, or you could at least link to them from you blog :)
To make the fake email addresses look a little less random, they are created using an algorithm that composes them with letters chosen to approximate their frequency in English text.

