There are a lot of products that come out every month, but if you look at them most of them have different theme.

list buiding
JV
article marketing
software
web 2.0
seo
PPC, adwords
adsense
etc.

Do you need all of them?

NO

You just need to focus on just one thing a keep going until you make it.
Most every product works if you follow up on it.

Charles