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Hello, Manceau38, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:

I hope you enjoy editing here and being a Wikipedian! Please sign your messages on discussion pages using four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question on this page and then place {{helpme}} before the question. Again, welcome! Vsmith (talk) 00:34, 24 October 2009 (UTC)Reply

Hi, thanks for your work and images at Ferrihydrite. I have changed the image size to the default thumb size for better readability. In regards to your edit summary comment: ..please don't add minor contributions. - I would suggest that is not how Wikipedia works. If you don't want your contributions edited (either with minor or major changes) then perhaps Wikipedia isn't where you want to contribute. Read that line just below the submit button: "If you do not want your writing to be edited, used, and redistributed at will, then do not submit it here." Please think that over and do expect changes to your edits to occur. Happy editing. Vsmith (talk) 00:34, 24 October 2009 (UTC)Reply

Please don't remove discussions from article talk pages as you have done twice on Talk:Ferrihydrite. Vsmith (talk) 23:01, 24 October 2009 (UTC)Reply