I saw this on my iMessage this morning…
The word “coolio” is now underlined in iMessage. It links to the album by the same name.
I don’t care about a 20-year-old album. I write “coolio” just because I want to. Don’t underline it.
For things that are a bit more unique, like “AA 442,” the flight that En took from Dallas back to Seattle, yeah, go ahead and underline that. But you might not want to underline everything. Otherwise, you’ll wind up looking like the wiki version of We Didn’t Start the fire. Everything will have a freaking underline — and you won’t know what’s for real, and what’s just BS.