Why bother with a corporate blog in the age of social networks?

The devel­op­ers of lun.ua, the real estate search portal, came up with what I think is a great idea:

(Image lost: a screen­shot of lun.ua.)

Why bother installing and set­ting up a cor­po­rate blog and then repost­ing its con­tent to social net­works? You can just create a com­pany page on Facebook and send people there for news.

I wel­come this kind of tech min­i­mal­ism that still keeps things current! :)

P.S. The guestbook (the page for reviews) runs on the Disqus com­ment system, which is also nice.