Just for sake of avoiding an argument, let's just say that ezine advertising is best form of advertising on Internet.
Now, let's move on to learning how to more properly make use of advertising available in ezines.
Essentially, and this holds true for all Internet marketing, you have two options to choose from.
OPTION #1 -- Playing The Numbers
The Internet in general is a numbers game. So long as what you are advertising is worth anything at all, there are going to be people interested in it. One option you have is simply to get an effective ad out to as many people as possible.
This option, while it's less time consuming, is also less targeted and requires more subscriber views per response than using targeted ezine advertising.
The best approach for this method is to take advantage of many of bulk ad buying programs being offered.
Subscriber/Ad Programs are low cost methods of getting your ad exposed to dozens of ezines and hundreds of thousands of subscribers. Some of best of these include:
2 Bucks An Ad http://hop.clickbank.net/hop.cgi?phage/paaads
2 Dollar Ads http://hop.clickbank.net/?phage/dollarday
$10 for 20 Ads http://hop.clickbank.net/?phage/CashGalore
Other programs exist that do not require you to subscribe to ezines your ad will be placed in, but still cover multiple ezines and many thousands of subscribers. Examples include:
Ad Mistress $30 Column Ad available from any ezine participating in program. See http://www.webventurist.com for instance.