Need a college loan? Ask your friends online.

Christina Christopher was two classes shy of an MBA when DeVry University told her she'd run out of financial aid. She had relied on federal loans, but she hit her limit. With no cosigner for a private loan, she was open to any option she could find.

Someone suggested the website GreenNote, which helps students appeal to family and friends for college loans. Within three weeks, she had $2,500 in loans.

She thought GreenNote's 2 percent fee was worth it because the loan process was formalized. "I couldn't just call up [friends] and say, 'Hey, look, this is what I need,' " Ms. Christopher says.

As higher-education costs rise and families feel the squeeze on traditional sources for college funding, students are on the hunt for innovative ways to pay their bills. In addition to loan websites like GreenNote, other sites are cropping up where students can raise donations for college.

Easy money? What's the catch? Some of the gifts come in exchange for earning good grades or for performing nonprofit volunteer work. And so far, the aura of potential on these sites is much greater than the actual money flow. In the near-term, at least, it appears unlikely that enough donors or lenders will come forward to meet even a fraction of the clamor for cash.

In fact, traffic to peer-lending sites may be driven, in part, by a lack of information about resources available to students and parents, financial-aid experts say. "There's in some cases a false sense that people are unable to get student loans. Usually, the story is not as bad as the headline," says Robert Shireman, executive director of the Project on Student Debt in Berkeley, Calif.

About a quarter of families making between $35,000 and $100,000 didn't even explore a major funding source by filling out the Free Application for Federal Student Aid (FAFSA) in 2007-08, according to a survey by Sallie Mae and Gallup.

If students truly have exhausted federal aid options, it's important to compare interest rates and payback terms before choosing a loan, says Deborah Fox, founder of Fox College Funding, a counseling service in San Diego.

GreenNote has a fixed interest rate of 6.8 percent. This is similar to average federal loan rates and lower than average private rates, which were running about 8.3 percent in early February, according to the website Bankrate.com. CEO Akash Agarwal won't share the volume of loans GreenNote has made since it started the lending service last summer, but he says students on average borrow about $5,000 total from two to four lenders. One advantage he touts is that people often feel a stronger obligation to pay back social loans.

"I've decided my repayment is going to be first to GreenNote," says Christopher, who got five loans through the site, primarily from friends of her mother's.

But peer-lending sites are relatively new, and some have been on shaky legal ground of late. Prosper.com recently had to stop arranging loans until it registers with the Securities and Exchange Commission (SEC), which ruled that it is the seller of securities, since lenders expect a return.

"If someone is wanting to make money off the loan, it's a business relationship," Mr. Shireman says. If the legal issues surrounding the loans aren't properly pinned down, "it's something to be really cautious of."

GreenNote is not registered with the SEC and doesn't need to be, Mr. Agarwal says. Prosper originated loans with a bank and then sold portions of those to loan purchasers, while GreenNote simply helps facilitate direct loans between family and friends, he says.

Gifts are less complicated. At CollegeDegreeFund.com, about 1 in 10 students who have posted profiles have received small gifts – typically ranging from $10 to $100, says cofounder Henner Mohr. Some of the donors are strangers who stumble across the profiles, not just the students' friends.

At GradeFund.com, students as young as 13 can receive education money in exchange for good grades, if they get sponsors. Joel Rojo, a Harvard University sophomore, is starting to pull in gifts for last semester's grades. His older brother pledged $200 for each A.

"It's kind of like that extra little push sometimes if you want to go out at night – or, do you stay in and study?... It does give a pretty good incentive," he says.

"The point for us is to get kids involved in their education, and potentially even contributing to paying for it at an earlier age," says Michael Kopko, who co-founded GradeFund.com with brother Matthew.

Mr. Rojo knows the gifts from his six sponsors won't take a big bite out of the roughly $50,000 in debt he expects to incur. "At least it will pay for textbooks or supplies or a new computer – the little essentials we often forget about ... but they actually do add up," he says.

Relieving debt burdens and tapping into graduates' interest in community service are the goals behind CharityForDebt.org. College debt "causes the most talented people that have the highest degrees to not be involved with the service-oriented employment in our country," says executive director and cofounder Jonathon Lunardi.

While awaiting official nonprofit status, it's been building up a network of donors, graduates, and nonprofits who could be matched for pilot projects in Dallas and Washington, D.C. Graduates would have their debt paid off at a rate of about $15 for each hour they worked with one of the nonprofit partners. They would submit a weekly portfolio online so the sponsor could see what they'd accomplished.

Finding sponsors is the main challenge for many of these websites. At GradeFund.com, for instance, 96 percent of those registered are students, while 4 percent are donors. But hope is not in short supply among these social entrepreneurs and the students drawn to their websites.