The events have taken place on one day each year since Twestival was launched globally in 2009 after an initial event in 2008, but this year the campaign will run throughout the year to provide more flexibility for local organisers.
In 2011, 150 cities around the world hosted an event. Amanda Rose, Twestival’s founder, said she was hoping more than 300 events would be held this year. More than 50 cities have already signed up, including London and Liverpool.
The last campaign raised about £370,000 globally, including £74,127 for UK charities. Overall, the movement has raised about £1.2m for 285 charities around the world.
After the relaunch of the campaign last week, Twitter users can apply to host their own Twestival, a live event held to raise money for a local charity.
In 2011, Plymouth Twestival raised more than £2,000 – the campaign’s average for a smaller city – for the Chestnut Appeal for Prostate Cancer through a series of fundraising events including a social-media surgery for "silver surfers" and a party with live music.
Rose told Third Sector: "We had a year off to regroup after four global campaigns and really thought about how Twestival could be sustainable. We have always had a very strong community across the country that get really passionate about hosting and giving back.
"A big part of Twestival that most people don’t focus on is the amount of awareness and connections our Twitter network can bring."