Hello, AlexMacArthur and a belated welcome to Wikipedia! I see that you've already been around awhile and wanted to thank you for your contributions. Though you seem to have been successful in finding your way around, you may benefit from following some of the links below, which help one get the most out of Wikipedia. If you have any questions you can ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking or by typing four tildes "~~~~"; this will automatically produce your name and the date. If you are interested in learning more about contributing, you might want to consider being "adopted" by a more experienced editor or joining a WikiProject to collaborate with others in creating and improving articles of your interest. Click here for a directory of all the WikiProjects. Finally, please do your best to always fill in the edit summary field. Happy editing! Red Director (talk) 19:24, 18 May 2018 (UTC)[reply]
This is your only warning; if you insert a spam link to Wikipedia again, you may be blocked from editing without further notice. 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. Anarchyte (talk | work) 15:35, 17 July 2019 (UTC)[reply]
Sorry if something went wrong. I was trying to improve Wikipedia. I was trying to find sources every time i met the tab "not enough sources". And when i saw broken link i was replacing it with the one that was working. --AlexMacArthur (talk) 06:33, 18 July 2019 (UTC)[reply]
Hello Alex, changes to external links get a bit more scrutiny here, and it did kind of look like you were changing sources to links to online casinos and lockpicking companies (a common spam theme). I'm still not quite certain of how reliable the sources are, but they do seem to contain helpful information. I do want to recommend to you that you search web.archive.org to see if a website is saved in the Internet Archive (then you can fix the link instead of removing it) and that in the case that the link is not in the archives that you try to cite reliable sources instead. I'd recommend not using the edit summary "Correcting link" since you're removing a source and not just fixing a link. Best, --89.153.169.78 (talk) 12:32, 18 July 2019 (UTC)[reply]
Please stop adding inappropriate external links to Wikipedia, as you did to Electronic lock. 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. If you continue spamming, you may be blocked from editing Wikipedia. KH-1 (talk) 03:53, 27 November 2018 (UTC)
This is your only warning; if you insert a spam link to Wikipedia again, you may be blocked from editing without further notice. 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. Anarchyte (talk | work) 15:35, 17 July 2019 (UTC)