"We've seen it grow to become something a bit like the Trade Me of giving," she said.
"We see all types of people. Need doesn't differentiate against socio-economic status or age. Our givers are equally lots of different people, and also groups."
The website meant donors could give in their own time, rather than being approached in the street when they may not be in the right head-space, she said.
"People are getting the bug for it."
The site relies heavily on trust but each page is moderated by the Spark Foundation following its creation.
"Making sure that the story is there, and it's all there, rather than there being gaps in it," Ms Le Gros said.
In order to go live, a page must also receive donations from three different people.
Ms Le Gros suggested prospective donors also do their own checks to confirm the validity of causes by checking social media for pages relating to them. There was also the option to "Report a Page" if anyone had concerns.
"We take this seriously. We look into this and have the resources available to do a preliminary investigation," she said.
There had only been one case, currently before the court, where a recipient of the funds from a page was believed to be claiming a false need.
"That is the only case in the seven-year history of GiveaLittle where people have used that as part of their deception."
Spreading the word about a page could be done via Facebook, Twitter, Instagram or "good old-fashioned email links", she said.
Papamoa man Brett Morrison, whose wife, Sarah, is fighting bowel cancer, said GiveaLittle had been "awesome".
"Obviously the money helps with easing the burden of the increased day-to-day and medical costs but one of the most amazing things is reading all the messages of support.
"We have had people who we've never meet donate and leave the most uplifting and heartfelt messages.
"That side of it is an added bonus and it really helps on those hard days to know that so many people are behind us."
Craig Wilson, whose daughter Dianne is recovering from a major car accident in Melbourne, said the money had made travel to and from Australia a lot less stressful.
"It becomes financially prohibitive for family that are out of the country."
The page was something friends could do to help, he said. "It helps you to carry on living, while being able to support your family member. It's something that's really taken off. It's a really nice way to be able to help somebody."
Sonja Reid, who is fundraising to take her son, James, to America for specialist treatment, said GiveaLittle had been "perfect".
"Even people from overseas can donate. Every little bit helps and it doesn't really matter if it's small or not. They don't have to give heaps, just a little bit is awesome.
"There's quite a few people in our situation, families that really need help and really want to do something for their child. GiveaLittle is a perfect vehicle for it."
Waikato/Bay of Plenty Cancer Society spokeswoman Maria Low said the region's donations hadn't been impacted by the rise of online fundraising as far as the society could discern.
"Daffodil Day is a great example of this; almost all the fundraising for Daffodil Day is done offline and the total raised has actually steadily increased over the past few years."
Many people donated to a specific person rather than a charity or cause and that was now an accepted part of how funds were raised, she said.
"Individuals and teams that sign up as online fundraisers often have a connection to the Cancer Society or other charity or cause, or they want to make a difference."
Heart Foundation spokeswoman Vanessa Winning said crowdfunding sites such as GiveaLittle were "not really" impacting on the charity.
"We believe that this is because people who donate to the Heart Foundation almost always have a personal connection with our work.
"What donation sites like GiveaLittle may do is stop new people coming to us. It may mean we need to find other ways of fundraising in the future, including more social and direct channels.
"We may be missing out on some smaller, new donors at the beginning of their 'giving' lives, those who aren't already personally connected to us yet, like those who give in annual appeals, or in less regular ways, but to date that hasn't happened."
