I'd like 10-15 new, up-and-coming technologies/services/products that
eCommerce or Internet marketers can profit from. 

For example 4-5 years ago it would have been the pop-up or interstitial ad.
Right now it might be podcasting. 

I also would like 2-4 companies that are selling the technology you find
for each category and contact URLs. Thanks.

While I'm not sure this falls into the category of what you're looking
for, I have recently begun what amounts to an eCommerce
investment/business (yes, it's really a hybrid) dealing with
electronic currency exchanging.  The potential ROI is incredible, and
I have already begun to experience this return in the short time I've
been involved.  You can find out more info here: 
http://www.ecurrency-merchant.com/

Technology:
RSS is a rapidly growing business sector.

Software:
FeedForAll - http://www.feedforall.com
FeedDemon - http://www.feeddemon.com
RSS Submit - http://www.dummysoftware.com/rsssubmit.html

Technology:
Podcasting is subset of RSS but is also a rapidly growing sector

Companies:
Podcasting Tools - http://www.podcasting-tools.com
iPodder - http://www.ipodder.org
iPod - http://www.apple.com/ipod/

HTH

No way.  It's gonna be mobile and SMS.  I think advertising will be
much more targed as a result:

http://www.zip-code.ws/listings/ipod.htm