Spam subjects seem to come in waves of similar groups. A few years ago they wanted to increase my penis size. Then they wanted to give me stock quotes. Then they wanted to sell me replica watches. Then they wanted to help me with my erection and satisfy my "wife" by selling me Viagra and Cialis. Now they want to give me better prices on medications.
A few subjects linger on, but the majority of them begin and end within a few weeks of each other.
My penis is fine, I don't wear a watch, I don't play the stock market, and I get my medications for free. I don't know how I get on these e-mail lists.