@pizzaseoEN posted on Twitter a UTF-8 experiment done by @dusoft around making your title tags stand out more in Google's search results.
In short, this is the test page that has the title tag that reads:
𝕋𝕙𝕚𝕤 𝕚𝕤 𝕛𝕦𝕤𝕥 𝕒 𝕥𝕖𝕤𝕥. ★★★★★ (Test it says) | Ambience
As you can see in the search results for that page, that title tag does stand out a bit:
If you search for this is a test, the page may indeed come up in the Google results. It won't rank any better than any other page, but Google does understand that text in that font format.
Truth is, it looks way too weird for me to encourage anyone else to try it but it is always fun covering these weird attempts to try to differentiate yourself in Google's ten blue links.
Forum discussion at Twitter.