Part of successful investing is staying on top of trends, especially in technology, so that you can spot early players. One of these trends is in so-called

marketplace service providers, which help B2B companies fulfill their deals. Our reporter

Joe Bousquin

takes a look.

Meanwhile, the

Nasdaq

continues its summer rally, powered largely by the dot-coms. For those of you who might not be longtime

TSC

readers,

TheStreet.com's

Internet Sector index is one of the most widely followed indices for New Economy stocks. We call the index the DOT, and it's in our ticker bar across the bottom of our page. For more information on the DOT index and to learn which stocks are in it, click

here.

And stay tuned, as we'll soon be doing our quarterly re-balancing of the index. On that note, see international columnist

Dave Kurapka's

report on the change in the methodology of a major

European stock index and how it will affect investors.

Key stocks:

Few companies reported earnings on Friday.

Altera

(ALTR) - Get Report

reported strong second-quarter earnings and announced a stock split. Meanwhile, for the latest (and rather unpleasant) analyst's take on

AT&T

(T) - Get Report

, see reporter

Scott Moritz's

report. And where are the

biotechs headed after a recent rally?

What you don't want to miss:

James Cramer's

list of the 50 mutual funds he's investing in and will track closely will be revealed tomorrow. And don't miss the Big Screen, where reporter

Ian McDonald

sifts for bargain-priced growth stocks favored by mutual fund managers. On Sunday, our Streetside Chat will be with Harry Bosco, head of optical networking at

Lucent

, about developments in that hot sector. Our sector spotlight Sunday will be the online broker group.

Today's link:

Wipe that salad off your face.

Jonathan Krim is executive editor of TheStreet.com. In keeping with TSC's editorial policy, he doesn't own or short individual stocks, though he owns stock in TheStreet.com. He also doesn't invest in hedge funds or other private investment partnerships. He welcomes your feedback at

jkrim@thestreet.com.