Twitter co-founder Biz Stone has emerged as one of the investors who are backing Irish software start-up Intercom to the tune of $1 million (€760,000).

Intercom chief executive Eoghan McCabe announced the funding at the 500 Startups demo day in San Francisco yesterday.

Mr Stone and Irish-born Facebook executive, Paul Adams, who also participated in the investment, will join Intercom's advisory board.

Japan's Digital Garage, Irish technology entrepreneurs Paddy Holohan and Eamonn Leonard, San Francisco seed fund 500 Startups, and Huddle co-founder Andy McLoughlin, also participated in the investment round.

Intercom has developed software that allows web based businesses find out more about their customers and communicate with them more effectively.

The company was founded in Dublin last year by Mr McCabe, Des Traynor, Dave Barrett and Ciaran Lee.

Mr McCabe said Intercom's management and marketing will be based in the US but it wants to keep its engineering function in Dublin.