第六年度open access weekis upon us, and one of the topics of particular interest toBMC Medicineis how open access (OA) publishing has been developing over the last decade.

The growth of OA journals is apparent to anyone following scholarly publishing, and much speculation has focused around the citation rates and overall quality of articles published in OA journals. In July,researchpublished inBMC MedicinebyBo-Christer Björk和David Solomonshowed that the scientific impact of articles published in OA and subscription journals are similar when journal discipline, location of publisher and age of publication are compared, which is particularly true in medicine and health, where OA journals founded in the last 10 years receive on average as many citations as subscription journals launched during the same time.

Further researchby Bo-Christer Björk andMikael Laaksofrom汉肯经济学院, published today inBMC Medicine测量了2000 - 2011年期间在OA期刊上发表的科学文章的数量。作者发现，在过去十年中，OA期刊出版已迅速增长在已发表期刊文章的年度份额中。在2011年期间，6713篇全面的OA期刊总共发表了340,000篇文章，而2000年在744篇全面的OA期刊上发表了20,700篇文章。此外，OA期刊的市场份额现在为12％（或17％（如果17％，则为17％，则为17％。包括一年内将其文章开放的期刊）。

So what are your views on open access publishing? For a chance to have your say, joinBMC Medicine(@BMCMedicine), Mikael Laakso (@mikaellaakso) and Bo-Christer Björk (@bjorkbobi) for aone hourTwitter聊天26th October at 12pm UK time. The twitter chat will use the hashtag#BMCMed, and be moderated from the@BMCMedicineaccount.

The questions we’ll be asking during the chat are:

Q1 – What are the main factors that have led to the steady growth of OA publishing?
Q2 - 您认为这种趋势将在未来十年内发展，并解释为什么？
Q3 – What challenges does the growth of OA publishing face in ensuring that it reaches its full potential?
第四季度,在哪儿e will the funding for OA publishing come from?
Q5 - 订阅期刊是否会提供OA期刊没有的好处？

Please join us to share your views on these topics, and use the hashtag#BMCMed
in all tweets. If your question or comment is directed at a specific individual, include their @name at the start of your tweet.

We look forward to your participation! If you’re unable to join us for the chat, please feel free to tweet your comments to@BMCMedicinewith the#BMCMedhashtag beforehand. An edited summary of the twitter chat will be published atStorifysoon after the session.