We The People, the White House petition platform that helps demonstrate how well people understand the separation of powers in the United States, announced a change in how it collects signatures. The website had required those who signed and/or initiated petitions to establish an account before contributing. That is no longer the case for signing.
This does not mean that commenting can be anonymous (insert NSA joke here about how it probably never was anonymous). Signing will require a name, email address and zip code. Those who want to start a petition must still have an account, which requires the same information as signing.
For what it’s worth (some are generally skeptical of the impact of such online petitions), there have been nearly 350,000 petitions started on the website since November 2011. There have been over 14.4 million users, and over 21.2 million signatures, in the same time period.