I was looking through the tags to see what else might be appropriate to add to a post only tagged with social-network. The description for that tag reads:
This tag is appropriate for questions dealing with communities on social networks. It is also appropriate to add more specific tags such as the exact social network being utilized.
So I looked for other social networks to use as tags. There is one for facebook and another for blog. There is nothing for websites in general, though there is a web-forums one. What's a web-forum? I suppose SE is one...and other bulletin boards.
The question dealt with Twitter and boom, there is no Twitter tag. No Instagram either. Is it time to do some updating?
Can we add a Twitter tag? Anything else?
Edited to add:
I wanted to add it to this question: Establishing yourself in "Regular" and NSFW communities
Twitter: While I haven't gone through them all, there are 59 posts on the site that mention the word Twitter. I assume a reasonable percentage of them would benefit from the tag.
Instagram: 8 posts that mention the word Instagram.
Snapchat: 1 snapchat (my teen uses that one a lot so it's just going to get more popular).
Wordpress: 19 posts mentioning Wordpress. These can go under "blog" but talking about the general care and feeding of a blog is very different from talking about technical issues regarding the software. I'd recommend both tags.