Yes, I've seen it too (as noted). About a year ago, I would wake up in the morning to about 100 spams every day. Now I wake up to about 200 spams in my inbox (or junkmail box to where obvious ones are sent) every day.
The research and reading that I've done on this subject makes it clear: the only way to eradicate spam is to make it unprofitable. It was shown that even a ~0.00001% response to spam (response here is following the links and actually purchasing something - the term 'conversion' was used) is enough to make spamming profitable. (see Spamalytics article in "Communications of the ACM" 09/2009 Vol. 52 No.09) Filters and laws haven't worked to quelch the oil-tanker loads of spam emails dumped into the internet every second one iota. Every site that discusses spam avoidance and defeat honestly states that the only real way is to stop spammers from making a living. Filters just hide the problem (but the ISPs, hubs, and internet connections are still overwhelmed with spam email packets even if you don't see them). Laws are useless unless they are enforced and international laws are rarely enforced to the degree necessary.
This shows how small the required investment is for spammers to profit from destruction of the universe (or, at least, the internet).
My proposal is an email surcharge. Every email is charged a small percentage of a monetary unit (say 1/100th of a penny). For someone that sends out even hundreds of emails per day, this would be literally pennies a day. Businesses could maybe 'purchase' bulk emailing rights to stem costs of valid bulk emailing or public emailing facilities. But, aha, spammers who send out millions of emails a day would all of the sudden need to fork over tens or hundreds or thousands of dollars every day or go out of business (by being denied email send capabilities). Someone needs to pay for the hapless destruction of internet bandwidth. They are the ones actually doing it, therefore they should pay for it.