Inbox Dollars: An Intro

The second way I've been trying to make money is with the site InboxDollars. So far it's a pretty good service, just be sure to sign up with something other than your primary e-mail account, because your inbox will get a fair bit of adverts in it after signing up.
I've been at it for a few days now, off and on. So far, I've not spent a dime on it, and my earnings are up to about $16 now. Once it hits $30, I just request that they send me a check.
The easiest ways to make money with Inbox Dollars are the following:

• Click on the paid ads they send to your e-mail. They all arrive with the subject "Paid Email from InboxDollars" so you know just what ones are what. So far I've gotten about $0.50 from that. Not much, but I didn't have to do more than click.
• Take Surveys It's just a few questions. Usually they'll take anywhere between five and twenty minutes, depending on how quickly you're able to get through it. Each one usually pays about $1.00.
• Sign up for free offers. There are many offers on the site that pay a dollar or more, and require no more than for you to sign up. Give them your alternate e-mail address, and there you go. You sign up, and you get money from it. There's currently one for eBay for $6.00. All you have to do is sign up through them, and bid on something. I'd suggest bidding a penny on something you know should be valued at well over $100. That way you get credit for their offer, and you don't spend anything at all. Well, unless you somehow with the auction. Then you can resell your penny item for a huge profit!