User talk:50.252.234.218

May 2020
Hello, I'm Finlay McWalter. I wanted to let you know that one or more external links you added to Doping (semiconductor) have been removed because they seemed to be inappropriate for an encyclopedia. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page, or take a look at our guidelines about links. It seems you've added this link to a number of semiconductor-related articles over the last few weeks. Wikipedia isn't a venue for advertising like this. -- Finlay McWalter··–·Talk 19:04, 11 May 2020 (UTC)

Please do not add inappropriate external links to Wikipedia, as you did to Epitaxial wafer. Wikipedia is not a collection of links, nor should it be used for advertising or promotion. Inappropriate links include, but are not limited to, links to personal websites, links to websites with which you are affiliated (whether as a link in article text, or a citation in an article), and links that attract visitors to a website or promote a product. See the external links guideline and spam guideline for further explanations. Because Wikipedia uses the nofollow attribute value, its external links are disregarded by most search engines. If you feel the link should be added to the page, please discuss it on the associated talk page rather than re-adding it. Thank you. -- Finlay McWalter··–·Talk 19:20, 27 May 2020 (UTC)

July 2020
Please stop your disruptive editing. If you continue to add inappropriate external links to Wikipedia, as you did at Applied Physics Laboratory, you may be blocked from editing. It is considered spamming and Wikipedia is not a vehicle for advertising or promotion. Because Wikipedia uses nofollow tags, additions of links to Wikipedia will not alter search engine rankings. Dan Bloch (talk) 16:00, 10 July 2020 (UTC)

January 2021
You may be blocked from editing without further warning the next time you insert a spam link. Persistent spammers may have their websites blacklisted, preventing anyone from linking to them from all Wikimedia sites as well as potentially being penalized by search engines.  MrOllie (talk) 19:52, 6 January 2021 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.