So recently in discussion, @lindar pitched an idea I really liked. Here it is, with an addition by me, so it's not hidden in threads. Please share and use if you like it.
The idea is that interacting with other folks' selfies can be somewhat fraught because you don't know where their boundaries are. And asking, "Can I compliment your appearance?" sort of short-circuits consent.
So when you post a #selfie, add tags:
• nocom (no comments/compliments)
• okcom (comments/compliments OK)
• rqcom (comments/compliments requested)
Also, if you want to specify the difference, you could replace -com with -flirt and/or use them in combination like [rqcom, noflirt].