Jim answers questions on Citigroup (C) - Get Report, Intuitive Surgical (ISRG) - Get Report and more.

I've been hearing about

potential margin erosion

at

eBay

(EBAY) - Get Report

for what seems like decades, but is probably only one decade.

Where does Legg Mason investor Bill Miller think

the best returns of the next few years will come from

? Hint: It's not tech.

Uh-oh. Howard Lindzon wonders if

Merrill Lynch

(MER)

might be the next Enron

.

I always like to follow the smart money. Here are our favorite

insider purchases and stock buybacks

of the week.

Modern Graham does a

valuation analysis

of

Affiliated Computer Services

(ACS)

.

Sramana Mitra

lays it on the line

:

Palm

(PALM)

vs.

Research In Motion

(RIMM)

.

What's

Apple

(AAPL) - Get Report

going to do

with all of this money

?

Even after the slaughter,

it might not be the time

to buy

Crocs

(CROX) - Get Report

.

The Biggest Percentage Losers List

is where the biggest potential snapbacks are. We provide some analysis.

EMC

(EMC)

is still

very undervalued

.

I need a new house, and

this one might do the trick

.

Seth Godin uncovers

the worst industry in the world

. I hope my kids never get involved in that.

At the time of publication, Altucher and/or his fund had no positions in the stocks mentioned, although positions may change at any time.

James Altucher is president of Stockpickr LLC, a wholly owned subsidiary of TheStreet.com and part of its network of Web properties, and a managing partner at Formula Capital, an alternative asset management firm that runs a fund of hedge funds. He is also a weekly columnist for

The Financial Times

and the author of

Trade Like a Hedge Fund

,

Trade Like Warren Buffett

and

SuperCa$h

. Under no circumstances does the information in this column represent a recommendation to buy or sell stocks. Altucher appreciates your feedback;

click here

to send him an email.

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