Does my SPAM know me?

Once in a while, I go through my spam folder for any legitimate e-mail that was mistakenly filtered. As I scroll through the thousands of e-mails in the folder, it's amusing to note the common theme in the subject of the e-mail.

After doing a quick scan through my list, here's the top themes of my spams in order of frequency:

1. Online pharmacies: "Best Online Pharmacy!", "free online pharmacy"
2. Viagra: "Erection for sexual activity", "No impotence"
   
3. Penis enlargement (these must be personalized): "add a few more inches", "Few more inches?

I wonder if these spammers are telling me something I should heed to?

ps. I'm a big fan of SPAM, the eating kind. Simply sliced and pan fried along with rice is a killer dish.