Twitter, the famous messaging network, has just announced a $35 million infusion from new venture capital partners and “Big Plans for Twitter Inc.” Even if most Silicon Valley companies are going through a hard time to stretch their available cash, Twitter accepted what co-founder Biz Stone characterized as an offer they couldn’t refuse.

Institutional Venture Partners (IVP) invested $14 million, while Benchmark Capital invested $21 million. Previous investors Union Square and Spark also increased their investments, though the amounts were undisclosed. It looks like Twitter’s management team has proposed various promising models for making money, none of which is being discussed publicly, and this convinced IVP to invest in a company that is basically “defying gravity.”

Everyone is now focused on Twitter’s technical execution and growing a global user base that already numbers in the millions. Twitter’s use grew 900 percent in the past year and is accelerating. What is Twitter? Well, the service launched in 2006 enables users to post and read short messages, limited to 140 characters, in a communications platform that operates across a variety of networks and devices. Twitter’s team currently consists of only 29 employees, so that’s why the $35 million sum is impressive.

However, everyone can expect the team to grow much bigger. According to some data, at the end of last year, 11% of online American adults said they used Twitter or a service like it. Twitter and Twitter-like service are used by about one in five adults between the ages of 18 and 34. Ten percent of 35- to 44-year-olds and 5% of 45- to 54-year-olds use Twitter.