It was discontinued in September 2024 after being delisted by Clarivate's Web of Science.

[1] Initially, the journal was entirely open access, without publication charge to the authors except for color figures, but Oxford University Press changed its policy in 2008 and made reviews, editorials, and commentaries subscription-based, while maintaining open access for original research papers.

[2] Hindawi returned the journal to a full open access model, but authors have to pay an article processing charge.

According to Retraction Watch, "Removing a journal from Web of Science means Clarivate will no longer index its papers, count their citations, or give the title an impact factor.

[8][9] One of the founding editors, Ernst said the journal mostly published "useless rubbish", primarily due to ineffective peer review.