While in general I'd agree that it doesn't add value to add "YC Reject" to the title, in this case the article talks about their YC rejection (sorry "non-acceptance") so including it makes sense.
Not accepted: "We would like to fund your startup, but we have x slots available and we already chose x startups that look more promising."
Rejected: "We are not going to fund this startup, no matter what".
The effect is the same, you do not get into Y Combinator. But in case of non acceptance this does not mean that they think your idea is not worth anything.
If a girl turns you down for a date, it doesn't matter if it's because she doesn't like you or because she just met someone she likes better than you, it's still a rejection.
Sure you have different levels of rejection, but they're all rejections nevertheless.
Frankly, who gives a damn whether they like your idea if they're not willing to invest?
Kind words and happy thoughts are cheap.
I'd have thought knowing that they believe you have a good idea, just not quite good enough would be encouraging. Whilst knowing that even if there were space you wouldn't get accepted should probably be a big indicator that you should take a step back and see if you're riding a horse or a donkey.
Similarly in dating - being rejected for someone _you_ consider a better catch is not a great problem; being rejected in favour of not having a date is far worse.
>Kind words and happy thoughts are cheap
Yes, it relies on an honest decliner.
There's a difference between asking a girl out to a specific event and her saying that she's already committed that night, versus asking a girl out with an open-ended invite and having her turn you down. In both cases, you aren't taking her to the event, but in the former, you might be able to take her out the next night.
The non-acceptance of YC is like the former — it's not going to work this time, but you're more than invited to try again next time.
P.S. Our success began just after YC rejected our idea :)
I'm leaning more to the Wolfram Software / 37 Signals model.
Lots of people have recently been rejected by YC and hearing about people that have gone on to succeed seems like it might give an emotional boost to people that have applied and not got in. Seems like a worthwhile trade off for the extra "noise".
"Groups we rejected will go on to create successful startups. If you do, we'd appreciate it if you'd send us an email telling us about it; we want to learn from our mistakes."
So they are also apparently are interested in hearing about such things too.
1stly, to highlight that there are success stories amongst those who are not accepted into YC.
2ndly, to point out that not getting accepted by YC may have emboldened the founders' resolve to 'go all in' and focus exclusively to make their startup a success.
i still think the extra 'noise' was a justified trade-off, given that the original article mentioned the YC rejection as additional motivation.
Maybe it makes them feel good to have everyone know they have succeeded despite being rejected by YC?