Some spam is obvious (“I lost 30 pounds and made $24356 in five hours by taking this special pill!”), but other messages are more subtle. A lot of spam relies oh “phishing,” in which a spammer will try to make their email look like it’s coming from a legitimate source in order to get your information. They may tell you to click a link that looks like it’s going to paypal.com, but if you hover over it, you’ll see that it’s really going somewhere else—likely a PayPal-disguised site where you willingly type in your information. Luckily, you can usually avoid those tricks by checking the URL and typing it in yourself instead. Be careful, too—sometimes those links will cause you to unknowingly spam one of your friends, which only spreads the scam.