The day after

being downgraded by one Wall Street analyst,

Commerce One

(CMRC)

fired back, announcing three new marketplace customers and a new consulting alliance.

That hot lead helped, as Commerce One's stock rose after opening lower. It was recently up $4.69, or 7.9%, at $63.56. Of course, that comes only after Commerce One's Tuesday sell-off, when it plunged 19%.

Oh, and the news? Commerce One said it and best buddy

SAP

(SAP) - Get Report

will power

ForestExpress

, a marketplace where companies in the forest products industry will buy and sell goods over the Internet. The announcement had been expected and marks the fifth customer that the duo have

landed together. Altogether, the pair has announced six joint customers.

But wait, just like a set of

Ginsu

knives, there's more. Commerce One also will build an e-marketplace for the outdoor products industry. It'll be

Worldwide Outdoor Products Exchange

TheStreet Recommends

. (The fact that Commerce One is powering an exchange for people who usually love trees as well as one for people who usually cut them down wasn't mentioned.)

On top of that, the company also said it will run a marketplace for

Seat Pagine Gialle

, Europe's leading publisher of telephone directories. To round out its morning of announcements, Commerce One has linked up with technology consultant

Wizmo

to help plug its software in at customers' shops.

All this followed Tuesday's downgrade by

Jefferies

analyst Richard Williams. He cited the company's high valuation and concerns that slowing sales may lie ahead in B2B. While Wednesday's announcements would suggest that's not the case, the deals were likely closed some weeks ago. And of course, until any of these marketplaces get up and running, they're just press releases.

Last week, Commerce One rivals

Ariba

(ARBA)

and

i2 Technologies

(ITWO)

learned the dangers of counting your e-marketplaces before they actually launch when the

Global Health Care Exchange

tossed aside the pair's technology.