The film is in the public domain and is freely available online:
FilmReference.com has a page on the film, which includes references, links and a review. They say,
Today, the film's critical stock is soaring: Broken Blossoms is widely regarded as Griffith's masterpiece, eclipsing even his better known epics.
Roger Ebert's review says,
What remains today is the artistry of the production, the ethereal quality of Lillian Gish, the broad appeal of the melodrama, and the atmosphere of the elaborate sets (the film's budget was actually larger than that of "Birth of a Nation").
And its social impact. Films like this, naive as they seem today, helped nudge a xenophobic nation toward racial tolerance.
Slant Magazine reviews it as one of their 100 Essential Films.
8/4/2008: GoatDog has a review.
8/30/2008: The Dancing Image has a review.
7/6/2009: Ferdy on Films has a review.