You see a fabulous girl/guy at a party. You approach them and say, "I'm fantastic in bed."

That's Direct Marketing.

You're at a party with a bunch of friends and see a fabulous girl/guy. You have one of your friends approach them, point at you and say, "She's/He's fantastic in bed."

That's Advertising.

You see a fabulous girl/guy at a party. You approach them to get their telephone number. The next day you call and say, "Hi, I'm fantastic in bed."

That's Telemarketing.

I don't know if you've heard, but starting Jan 1, 2005, in many states, you can no longer use a cell phone while driving unless you have a "hands free" adapter.  So, I went to Circuit City and they wanted $50 for a headset with a boom microphone for my cell phone.  Most cellphone stores are also very expensive.