1

Sometimes, I see � in articles in between words. Here is a screenshot: http://www.wikihow.com/Image:Screen-Shot-2014-12-25-at-6.30.35-AM.png . I saw it in an article while editing.

2

It’s a symbol that wikiHow doesn’t support. This can happen if the text if copied from a Microsoft Word document, which has symbols not supported by wikiHow. You’ll want to remove any instances of it, as it has no use in articles.

3

It is also good to be aware that the � symbol replaces something that was intended to be there and, if you can figure out what that was supposed to be and put it back, so much the better.

4

It might be emojis from a mobile device. I’ve seen those symbols on other sites before, and if I visit from a mobile device, I can see that they are emojis.

5

It comes from using Word documents and straight copy & paste onto wikiHow. I personally use Wikipedia or something else that I can copy and paste letters with accents to replace these symbols.