If you have adopted Hangouts for conversations you may not realise you can use standard keyboard shortcuts to format your text.
Previously in Google Chat you had to use the Markdown-like formatting (e.g. _ italics_ ; * bold* ; - strikethrough -) which is still utilised in Google+ posts.
Hangouts conversations you can use the standard keyboard shortcuts
|Bold||Ctrl + b||⌘ + b|
|Italics||Ctrl + i||⌘ + i|
|Underline||Ctrl + u||⌘ + u|
Get formatting text in your hangout and spread the word!