"Having vented my frustration by tweeting on my mobile, I recalled a fleeting thought I'd had several months earlier: would the Twitter community support me if I tried to flee the North East and travel the world?" he wrote in a Guardian article last month.
And support him they have.
No sooner did Smith tweet (send a message using the Twitter service) about his scheme, than offers of travel and accommodation began to flood in.
He left Newcastle on March 1 and has since travelled through the Netherlands, France, Germany and many US states, utilising all manners of transport.
Along the way he's sung karaoke in Chicago, celebrated St Patrick's Day in California and met Hollywood royalty in New York.
A flight between Los Angeles and Auckland brought him 12 hours closer to his final destination two days ago and local Twitter users offered him lifts to Auckland Airport, a plane ticket to Wellington and a night's accommodation there last night.
Smith is still open to offers of help on his travels, but they can only be sent via Twitter and he can only accept offers within three days of using them.
He says he would love to reach Campbell Island but realises he may have to be content with flying over it as its UNESCO World Heritage status means visitor numbers are carefully controlled by the Department of Conservation.
However a glimmer of hope has appeared: "The authorities for Campbell Island have said if I can get there by boat, they'll consider a permit to allow me on the island," Smith tweeted yesterday afternoon.
With five days to go, the world's first Twitchhiker may yet reach his unreachable destination.