Overview
There have been many books written and systems developed for profiting on eBay auctions.  We've weeded through and selected four of the best.  While we think that $10,000/month profits is on the high end, eBay represents a great entrepreneurial opportunity.

Best Suited For
Anyone who likes to spend time online and enjoys online auctions.  Even those who haven't tried eBay may find the thrill of selling for profit online irresistible.

Considerations
Like other online job opportunities, making money in online auctions requires persistence and determination.  Beyond that you'll need to know the proven strategies and techniques that have made people a lot of money on eBay in order to make the most money possible.  The eBooks reviewed below have been selected from the many written on eBay.

Overview
Pay-per-click (PPC) search engines have enabled many entrepreneurs to profit handsomely, particularly in the last year.  Of the PPC search engines, Google is the best of the bunch.  The offerings reviewed here represent three of the best available for profiting from the Google direct marketing revolution.

Bottom Line
If you're new to direct online marketing, these offerings are very useful.  The challenge is getting started and each of the offerings we review will help you to do just that.  If you're experienced, getting just one or two nuggets from any of these manuals will make your small investment well worth it .  While all are worth obtaining, "Google Cash" stands out for the excellent real life examples and strategies it provides.

Income Earning Potential
The sky's the limit if you market the right product the right way.  It is possible to make over $1,000 daily by advertising on pay-per-click search engines and you don't even need a website.  Realistically you won't make this much, especially at the beginning, but increasingly people do make a very nice income from it. 

Overview
For a small fee, you gain access to a database of hundreds of research companies who will pay you for your opinions.  The upfront fee can be recovered with as little as the first survey you take, although you have to be persistent.

Best Suited For
This is an opportunity for stay-at-home parents, students, entrepreneurs, retirees - anyone who needs a flexible source of extra income and enjoys using the Internet.  These online surveys can typically be done no matter where in the world you live, although most of them are in English.

Considerations
Online survey jobs do require effort and persistence as not all the survey companies will select every individual to participate.  It's a numbers game - the more you complete, the more you can make.  Many people do paid online surveys for part time extra income, while some others do it full time.

Realistic Income Earning Potential
As much as $99 but more typically $5-$50 per survey depending on the company, the individual, and each type of survey or focus group.  Increasingly some companies are offering prizes or points toward prizes instead of cash for online surveys.