This was the title of a study just done by Jupiterresearch — it appeared in the DMA eNewsletter yesterday (DMA stands for Direct Marketing Association).
Here’s the actual blurb:
“Online marketers will spend $2.1 billion this year on affiliate marketing fees, with US online affiliate marketing spending reaching $3.3 billion by 2012, according to JupiterResearch’s “US Online [...]

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If you’re doing any pay per click advertising, it’s crucial that you track your keywords so you know which ones convert into sales AND which ones don’t.
There’s a ton of paid options, but there’s no reason to spend your hard-earned money because Wes Mahler has created two FREE keyword-tracking applications.
The one I’ve started using is [...]

Popularity: 46% [?]