Apple made headlines again last week, but this time they weren't entirely about the new iPad.

The tech behemoth announced that it would start paying a quarterly dividend worth $2.65 per share beginning in July. That amounts to nearly $10 billion to be paid out in the first year alone.

"Apple is the leader here," says Howard Silverblatt, senior index analyst with Standard & Poor's, who adds that the company will put pressure on other technology firms to start paying dividends.

Dividends usually are awarded by well-established companies that no longer need every dollar to grow. But dividends fell out of favor in the bull market of the 1990s, when investors cared more about rising stock prices. Now, with incredibly low interest rates and after a decade in which stock prices went nowhere, investors have begun to appreciate the cash.

As payouts gain in popularity, investment professionals say it's harder to find dividend-paying stocks at attractive prices. Experts also raise concerns that investors might be underestimating the risk of these stocks.

And as investors rush to collect dividends, another factor should be considered: Most dividend income is taxed now at no more than 15 percent, but this favorable rate is set to expire at the end of the year.

Still, even with these potential drawbacks, dividends can play an important role in a portfolio. You just need to make sure that the stock is an appropriate fit and that the company is committed to maintaining — and increasing — the dividend over time.

Silver Spring financial planner Denise Leish says holding stocks with dividends is like owning rental properties — with paying tenants. She started buying dividend-paying stocks four years ago as interest rates fell and as her clients approached retirement and wanted more income to supplement their pensions.

And, says Leish, when companies increase the dividend, "it's like getting a cost-of-living adjustment."

Companies are responding to the demand for dividends.

A record 22 firms in the S&P 500 index launched dividends last year, Silverblatt says. He expects that companies in the index will pay out $277 billion in dividends this year, a 15 percent increase over last year.

And mutual funds with a focus on dividend-paying stocks also have sprung up. Chicago-based Morningstar tracks 45 U.S. funds with an emphasis on dividends — 16 of which were launched last year.

This summer, Apple will become the second-largest dividend payer, behind AT&T, Silverblatt says.

Apple is sitting on nearly $100 billion in cash.

"They had so much cash and so much pressure to do something," says Chuck Carlson, editor of the DRIP Investor newsletter. "Why not give it back to shareholders?"

Dividends are measured in terms of yield. That's calculated by dividing the dividend by the stock price. In Apple's case, the dividend yield is 1.8 percent, which is similar to what other tech companies offer, Silverblatt says.

Others had higher expectations of Apple.

"It's better than nothing, but I'm still not that impressed," says Josh Peters, editor of Morningstar DividendInvestor newsletter. Peters says Apple could pay a 6 percent yield and still have enough cash to grow its business as quickly as it does now.

"Is Apple a great dividend play? The answer to that is no," Peters says. He expects that Apple will continue to raise the dividend and that it will be more meaningful over time.