I don't use it at all, except in professional contexts, and even then rather sporadically. Use in general society marks one out as a bit of an arse imo.

That said, I would now you like all to call me Herr Dr. Von Frick.

I am not completely sure but I have heard that for example you cannot redirect your mail to Dr. Smith if he did not register or announced to the post office that he's "Dr." Smith (I don't know if he would have been required of providing proof of his doctoral degree). In this case, I heard that forwarding to Herr Smith would be acceptable.

IMHO I have never met anybody who insisted to be called Dr - although I assume these people may exist. Especially it feels weird to use the title outside of the professional life and the field of expertise. And probably it could be said that there's little value to acknowledge the title even within some professions, as it's kind of an entry level requirement. It's a bit like black belt becoming the first dan (beginner on a different scale of competence). YMMV.

Maybe there's a viral video with someone introducing their academic titles in Game Of Throne style:
"You stand in the presence of Daenerys Stormborn of House Targaryen, rightful heir to the Iron Throne, rightful Queen of the Andals and the First Men, Protector of the Seven Kingdoms, the Mother of Dragons, the Khaleesi of the Great Grass Sea, the Unburnt, the Breaker of Chains." :-)

I don't have a phd... but I think Dr. etc is acceptable on a business card, business email footer, linkedIn or CV... but that's about it.

My pet peeve is people who have all sorts of other things in their name on LinkedIn.

E.g.
Eur.Ing. Spinal MSc BEng, Member of the Society of Trolls, MBCS, CISSP, CISM, Pizza Eater, etc

Those bug me...

You need to be a 'fellow' or 'associate' of the society of trolls to use FST or AST, MST would be a joke

Thats a step too far for me. The rest are ok.

I interview a lot of candidates, and I've never seen the "kudos" of being a member of a society where you pay, and there's no "filtering" to enter...

Sure, you can attend the events - but just being MBCS is kinda like.... ok, so what?

Fatmanfilms MEF

I agree. Of course, I mention it in my CV and LinkedIn bio, but as part of my title? Mmm...

OTOH, some very decent people whom I highly respect have it in their LinkedIn titles :-/

This. Same with professorships and similar.
Academics present themselves as thinking they're something else because of it. This may differ in (northern-ish) Germany, it does differ in/around Vienna.

That said, using your academic grade may be Ok in a professional environment (subject to company culture) as that's where it's not just relevant but potentially important, provided you name the field it applies to (Dr. sc. nat. or Dipl. Ing. Inf. or whatnot). Of course that's also where a title can be useful to put another academic in his place.
Mother Effing Fu***r?

Reminds me of this guy


Arnold J Rimmer BSc

Bronze Swimming certificate

I think LinkedIn is a place where it belongs, it's a business site and they might as well be informed you went through the trouble to write a dissertation.
Unless of course reading your dissertation won't ruin the good impression.
Business-cards is the place to put it too. It's part of the professional qualification.

On the other hand it doesn't say much really, in my GP's group practice there is one medic without a doctor's title. He's the best educated member, according to my Dr. GP.

Of course it'll be delivered. I received a letter just this morning addressed to me correctly as Dr. kngavl despite my nameplate only being kngavl.

I don't use it, apart from my business card where it was compulsory (my boss asked me to put it there). I also don't use the title on my LinkedIn page, I only include the degree in the education section. I think using it in everyday life is pretentious, who cares if you have a Ph.D.? Funny thing is, the university I got my Ph.D. from is also awarding an additional title (DIC = Diploma of Imperial College) with no practical added value as every postgraduate student gets it, but you still see people using it next to their name (Name Surname B.Eng., M.Phil., Ph.D., DIC).

I don't know if this was intended as a joke, but I can confirm that I don't have Dr. on my doorbell and I still get letters from my university (the only sender that uses the prefix Dr. in the mail).

One letter missing it seems.

I don’t have Frau or Miss or Ms on my post box - Just Island Monkey. Letters addressed to Miss/Ms/Frau Monkey arrive fine - why would Dr Monkey be any different?

maybe because , in the Standard Model, the higgs particle is considered to be a massive scalar boson with zero spin, no electric charge, and no colour charge.

I am afraid spam distributors know than and remove the part after the "+" sign

PhD still has enough value that I could see why people do so.......

However what makes me laugh is MSc/BSc etc. I mean cmon they have been paper for years now.

As mentioned, it's a different world in Austria.

They're missing their royalty and thus titles are everything.
They even "wear off" to your wife (don't know if it's the other way round, TBH), where if your husband is a Dr., you are automatically "Mrs Dr.".
Even if it's not a medical titles.

Here, nobody cares beyond the business card.

It used to be that knowing the right people from the RS through your Officer-career could open corporate doors at the top, but that has apparently also gone in the last two decades.