How to make sure your donation gets to a good cause: Plain Dealing We are getting so many letters from groups looking for donations. Some even enclose a couple dollars in the envelopes. My wife looks at the pictures and says, "Don't you feel sorry for these people?" But I think some of these are scams. Walter Kostendt, North Royalton We're nearing that time of year when mailboxes are stuffed with pleas for donations. Just as you can't buy everything you see an ad for, you can't donate to every organization that asks you for money. Nor should you, because some causes aren't good. For proof, look no further than Cuyahoga County Jail, where John Donald Cody, better known to the public as "Bobby Thompson," awaits trial on charges he created the bogus U.S. Navy Veterans Association to bilk more than $100 million from donors nationwide. But if you're going to give, make sure your money goes to a good cause:  Throw away the high-pressure appeals. If you receive lots of lottery and sweepstakes mail, chances are high you're getting lots of mail from suspect charities. While you can't block the post office from delivering appeals for money, you don't have to read mail just because you get it. Dan Borochoff, president of the watchdog group, CharityWatch, calls highly emotional appeals "unethical" techniques that some charities use to pressure donors to give. Similarly, he says, a charity that gives you something -- whether it's a dollar or a sheet