SAN DIEGO -- Arnold Lamb is angry about a postcard he received in the mail. He said he receives a lot of junk mail, but this one was different.

"(The postcard) pissed me off. The fact that it didn't say who it was from," said Lamb.

"Important elder law changes" was written on the pink postcard Lamb received. It also said consumers could request "free information" about benefits, including probate and estate taxes, as well as reducing or avoiding income taxes on investments and Social Security.

If a consumer signs and mails the postcard, he or she receives free financial information. However, consumers who follow through open themselves up to unwanted calls from telemarketers.

"In my mind, it is a deceptive document," said Beth Givens of the Privacy Rights Clearinghouse. "The problem is by giving them this information you've said to them we now have a business relationship. And so under an existing business relationship, they can contact you even if you are signed up for the Do Not Call Registry," said Givens.

Consumers on the Do Not Call list are not supposed to receive unsolicited telemarketing calls.

However, once a consumer asks a company to provide information, he or she can be targeted by the telemarketers again, experts said.

Consumers should be skeptical about the "free" offers of information they may receive. It can include just about any product and could be directed at any age group.

"Read it carefully. If it doesn't make sense, I would suggest you ignore it or rip it up and throw it away," said Givens.

Lamb did not fall for the trick and now he is warning others.

"This can't be. This is a come-on," Lamb said.

The company doing the postcard mailing is Premier Annuity Prospects located in Dartmouth, Mass.

If the company or any other telemarketer calls, experts recommend consumers ask them to stop calling and to place their name and phone number on the company's "do not call" list.

Experts also said consumers should be careful when signing up for contests or information about some services. By signing up, experts said, a consumer is creating a "business relationship."

10News called Premier Annuity Prospects to get their side of the story.

No one in management was available, though 10News did talk to a telemarketer named Catherine, but she refused to comment on the company's mailing campaign.

Experts also said consumers should be on the lookout for similar mailers and postcards that offer such services as gardening tips, mortgage help or the chance to win a contest.