Do you include external links on your mobile website?

Do you include external links on your mobile website?
If the answer is yes, then the next question is, do these points you to the another mobile website?

the best way to optimize your mobile website for SEO is to always check that whenever wherever possible, you are always linking your site to the mobile webpage.

For example, Youtube is a kind of best option to share your videos with everyone and then incorporate YouTube videos to the mobile website for sharing. YouTube makes things very easy as they have the automatic mobile detection code for any link that you set up which let them know what type of connection is this - mobile or a PC connection.  However, if you use their actual mobile URL (m.youtube.com/Videolink) when setting up an external link from your mobile website instead of the regular desktop URL (www.youtube.com/videolink) this will only help improve your mobile SEO ranking.