$1.8 trillion Company has a history of snapping up social networks about every two years.

Underboss Satya Nadella.

It's bought Lincoln Get Hub and the maker of Minecraft.

What all these sites had in common is that they're growing fast and had a community of dedicated users.

Online.

Scrap of Pinterest fits the bill as monthly active users grew 37% in the fourth quarter to 459 million prices.

Also attractive but at least relative to other networks.

Take Twitter.

Both companies have a market capitalization of just over $50 billion and similar profit in the fourth quarter of over $200 million.

If Pinterest revenue grew three times as fast, the oddly subdued price maybe because Pinterest users tend more towards suburban moms looking for inspiration had to remodel a bathroom rather than the media, financial and tech types that congregate and Twitter.

This low profile, at least relatively, may also come in handy in Washington.

Lawmakers are increasingly concerned about the dominance and social effects of networks like Facebook and Twitter interest community seems more like a family friendly bubble focused on shopping than storming the Capitol talks air off.

At least according to Financial Times, which broke the story, a Pinterest may have long term appeal to bigger firms looking for a model.