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Maintenance template warning about unreliable sources

I’d like to ask for a help to fix the problem (maintenance template warning) with the sources (unreliable sources) in the article "Borut Kržišnik". I know that sources like Youtube, Imdb, or list-sources are highly critical, but there are some exceptions, as written in Wikipedia tutorials, for example, when the Youtube video or entry is made by reputable source. In this article, there are several Youtube videos or posts created by what I suppose are trustworthy and respectful sources, for example: Maritiem Museum, Compton Verney, Museum, Danshuis Station Zuid and similar. Can anyone tell me which specific sources in the mentioned article are not acceptable? Filmar2025 (talk) 11:07, 23 October 2026 (UTC)

My first guess is IMDB. It is certainly an unreliable source. There can be exceptions where it's usable, but I don't know if this is one of those. I'm also unsure about this way of using YouTube videos. TooManyFingers (he/him · talk) 12:18, 23 October 2026 (UTC)
Besides YouTube and Imdb there is also a WordPress blog. The tag was added by User:Dclemens1971 in Special:Diff/1268652688.so perhaps they can clarify their specific concern. CodeTalker (talk) 13:54, 23 October 2026 (UTC)
Wordpress blogs are self-published sources and are, with extremely rare exceptions, unreliable and especially unacceptable for use in a WP:BLP. Dclemens1971 (talk) 14:26, 23 October 2026 (UTC)
In this case, https://stuttgartballet.wordpress.com/2018/03/19/the-fab-five-katarzyna-kozielska/ - published by The Stuttgart Ballet - would seem to be reliable.
(Whether it supports the claim it purports to is another matter.) Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits; 14:38, 23 October 2026 (UTC)
How do we know it was actually published by the Stuttgart Ballet? Anyone can set up a Wordpress site, and the Stuttgart Ballet has a blog on its own website at https://www.stuttgart-ballet.de/blog/. That's why Wordpress blogs are almost never permitted for use as reliable sources. Dclemens1971 (talk) 14:42, 23 October 2026 (UTC)
It's their site, yeah https://stuttgartballet.wordpress.com/ they moved it.
Anyone can make a website, too, it's about who is publishing it. PARAKANYAA (talk) 15:01, 23 October 2026 (UTC)
I checked an archived version of the ballet homepage and it links to the Wordpress blog. TSventon (talk) 15:50, 23 October 2026 (UTC)
Anyone can make a website, too, it's about who is publishing it.
While you are certainly right about this, it's also a problem; deciding who to trust does necessarily involve trusting someone. TooManyFingers (he/him · talk) 07:44, 24 October 2026 (UTC)