Most astute market watchers have known for a long time that the package delivery companies Federal Express (NYSE: FDX) and United Parcel (NYSE: UPS) are good barometers for the overall economy. When business slows down or speeds up they feel it immediately as the package count shrinks and rises.

Both stocks have lost ground the past two days with the overall market and possibly because of the slowly rising oil prices now back up to $60 a barrel.

One of the best things about blogging is the instant responses we receive. There are many times you have to be thick skinned when receiving criticism or just tolerant of the foolish people who are either rude or unknowing.

This brings me to Mr. noitall (small 'n' his choice) and the following commentary which followed my recent post $700 billion is real money!

"Well, maybe I was labeled a cynic about 2 years ago when I said the Fed is in a "check-mate" situation, where they will have to choose between saving the stock market, real estate market, or the dollar, but it most likely fail at all three. I don't think I am a cynic, just a realist, and it looks like I was right. Another thing I will say is massive greed, ignorance, arrogance and our willingness to believe in fantasies allowed this to happen. Maybe when a "cynic" questions some of the well known "facts", like the "buy & hold" theory, people should listen & give it some thought, before they believe the "historical data" they are given."

Mr. n and I often find common ground and he is telling the truth when he writes that two years ago he predicted the speculation and down market we are faced with today. While I must say that I find his view bleak, it has to be said also that people should be better prepared for poor markets and tough times.

While Mr n. is correct today and maybe tomorrow, his bearish outlook may not hold true next week or month or year. He does not mention the folly of straight-line analysis, but I am sure he would agree that good times do not necessarily follow good times and for the same reason bad times to not proceed in a linear fashion either.

It's been said many times before but, given how few people pay attention, it's worth repeating every time that the market takes a nosedive. History has demonstrated amply that investors who try to jump in and out of the market to avoid big declines find themselves achieving horrendously bad results than those who simply buy and hold.

I know -- with the Dow looking like it could open down 500+ points tomorrow, it can be scary. And maybe you'll be able to save yourself more anguish by dumping everything. But maybe not. It's impossible to know and the track record of investors who make that bet during market meltdowns is not good at all.

Bottom line: If you're in a panic over the market's gyrations today, do not trade! Take a walk. Play with your kids. Read. Go to the gym. Whatever! But making investment decisions in a state of emotional instability is never a good idea.

If the market's volatility is messing with your mind, I would strongly urge you to pick up a copy Your Money & Your Brain for some strategies on how to manage your emotions. So go pick up a copy, turn off your computer, shut off CNBC, stuff the Wall Street Journal in the trash, and chill out.

Investors make mistakes every day. If they didn't we'd all be as rich as Warren Buffett and we're not.

Here's a list of six such mistakes:

• Follow hot tips. As a blogger on AOL's BloggingStocks, I know that some of the most popular posts are the ones that repeat what Jim Cramer said on his TV show five minutes before the post appears on the blog. The reason these posts are so popular is because lots of people are Cramer Ditto Heads (CDHs). He tells them what to do and they do it. While some use Cramer as a starting point for further research, many are too willing to be led and are not inclined to do their own research.
• Don't know how to research fundamentals. One of the reasons people don't do their own research is because they don't know how. Specifically, one kind of research many people don't know how to do is understanding how a company -- whose stock someone wants to buy -- fits within its industry. Many people would not know how to begin answering fundamental questions such as: Is the industry profitable? Why? How is that profitability likely to evolve? What is the company's market share? If it's a leader, can it sustain that leadership? If it's behind can it catch up? What kind of cash flow does the business generate? How much cash flow is it likely to sustain in the future? Does the market recognize these future cash flows in its price?
• Don't know how to analyze technicals. Many times fundamentals have nothing to do with how a stock performs. For example, in December 2003, Martha Stewart Omnimedia Inc. (NYSE: MSO) stock started going up from $9 when its Home & Garden Television (HGTV) show was taken off the air to $36 in February 2005 when Martha Stewart got out of jail. During that time the company saw its revenues shrink 20% a year and its losses skyrocket. The reason the stock went up is a mystery. But I thought people who were loyal Martha Stewart Ditto Heads (MSDHs) bought MSO as a show of support. Many investors do not know how to analyze money flows that would provide clues to what is driving a stock up or down. This can cause them to buy when they should be selling, or sell when they should be buying.

Wall Street, financial arbiter in the capital of the world, has amassed dozens of adages since the dawn of publicly-traded companies. Adages that -- while not proving to be 100% accurate for every historical case study -- nevertheless do contain substantial amounts of truth.

And one of Wall Street's adages is: "No one ever went broke, holding Coke."

That's The Coca-Cola Company (NYSE:KO), not the bottler. Coke's shares closed Friday at $48.24 up 14 cents.

Sluggish sales, as well as competition from generic colas, and the U.S.'s trend toward the consumption of health-oriented, non-carbonated sports drinks, like Gatorade, have created a substantially different soft drink sector than a generation ago, when KO was dominant both domestically and internationally.

And that sluggishness has been reflected in Coke's stock price, which, for the most part, has been stuck in a $40-$55 range for about 6 years.

Warren Buffett or James Cramer, who do we have more faith in? Is that a serious question? Probably not. I have been told that Cramer's TV show has 17 million viewers. I wonder how many people would tune in to hear what Warren Buffett has to say. Indeed, Mr. Buffett might make for very boring television. We have even noticed here at BloggingStocks that when Cramer's name appears in the headline, the stories seem to be more popular. And while Buffett's name certainly attracts attention, it does not seem he is as popular.

Comparing the two noteworthy investment gurus reminds me of the saying: Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime. Cramer throws out dozens of picks and pans every week. Tracking all his commentary has turned into a web sporting event of sorts. When he changes his mind, I can only guess that those hanging on his every word get dizzy. I suppose that with Cramer, followers might get to eat on some days and on some they don't. I do know he has made some good calls. He has also made some unfortunate ones.