Are Twitter's Days Numbered?

I must admit that I'm latecomer, I signed up only this year. I found some friends, added some more people who I found interesting, read some tweets. And I just don't get it. I found exactly the same type of people as on the other social networks and exactly the same type of messages: look at this funny picture, big thanks to my fans, our product rules, here is my new blog .

In the old days, when feature phones were rarity and social networks young, some ingenious guys came up with idea how to make (micro)blogging on dumb-phones viable. Twitter allowed two-way communication within people using short and simple text messages, available on every phone. Although it started as blogging platform, Twitter exploded with the rise of the social networks, thanks to its low entry threshold.

But the next big thing that came changed the situation. Smartphones have penetration of over 50% in developed countries. With smartphone came full-fledged applications for "real" social networks, like Facebook and Google. Having this media and feature rich services, who needs Twitter anymore? Or better, what Twitter can do that others don't?

For one thing, Twitter has neutrality. While big players don't like each other very much, no one sees Twitter as a threat and everybody integrates with it. If you want to hear from and be heard by everybody, Twitter is the right choice.

Secondly, they stick to principle "less is more". By keeping client lightweight and smooth on not just top of the line but also on under-powered hardware platforms, it is more enjoyable than the competition.

Thirdly, celebrities. Lots of them. Like gossip? Twitter is the right place.

What they lacking is a way to make money, but that is not so important for a social network web company.

Its minimalistic, neutral nature and celebrities could be the right way to survive. How can big players respond?