Twitter raising more money. Values the company at $1 Billion Dollars.

Twitter is reaching another milestone in its momentous growth with another round of investment valuing the company at $1 Billion.

TechCrunch is reporting the tech startlet has announced the investment to the company’s staff at an internal meeting and has raised approximately $50 million dollars.

The news comes shortly after Twitter announced clarification of its terms and conditions, outlining its right to reproduce and copy user postings, but confirming that all tweets belong to its users.

Twitter also left open the possibility of new advertising campaigns by notifying users that the site will keep the right to serve ads based on web page information and search queries.

Twitter has raised approximately $55 million to date, with a round in March totaling $35 million and valuing the company at $250 million.