User talk:108.31.173.26

May 2019
Hello and welcome to Wikipedia. When you add content to talk pages and Wikipedia pages that have open discussion (but never when editing articles), such as at Talk:Younger Dryas impact hypothesis, please be sure to sign your posts. There are two ways to do this. Either: This will automatically insert a signature with your username or IP address and the time you posted the comment. This information is necessary to allow other editors to easily see who wrote what and when.
 * 1) Add four tildes  ( &#126;&#126;&#126;&#126; ) at the end of your comment, or
 * 2) With the cursor positioned at the end of your comment, click on the signature button OOUI JS signature icon LTR.png located above the edit window.

Thank you. Sum mer PhD v2.0 12:03, 1 May 2019 (UTC)
 * If this is a shared IP address, and you did not make the edits, consider creating an account for yourself or logging in with an existing account so you can avoid further irrelevant notices.

September 2021
Hello, I'm Denisarona. I noticed that you added or changed content in an article, Keyhole problem, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at referencing for beginners. If you think I made a mistake, you can leave me a message on my talk page. Thank you. Denisarona (talk) 12:56, 9 September 2021 (UTC)

Please refrain from making unconstructive edits to Wikipedia, as you did at Keyhole problem. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Denisarona (talk) 13:00, 9 September 2021 (UTC)