Is Lonely Planet as we know it in terminal decline?

A number of backpackers bibles fought for shelf space in bookstoors from the Rough Guide, Frommer's, Fodor's and Lonely Planet. Writing this post in Prague, I see many people still clutching city guide books in various languages wandering around enjoying the sights and restaurants.

However, the number of people with Galaxy smart phones and tablets seems to be far outnumbering the paper based variety? The quality of photograph produced by the Galaxy and iPhones camera also seems to outnumbering digital SLRs and compacts.

I am a member of the Lonely Planet website, this is more of a forum than guide in my eyes. Why would Lonely Planet canabalise their own sales of printed books to provide free online information? However, with the emergence of TripAdvisor, Booking.com and Hostels.com, is the Lonely Planet business plan looking shaky?New travelling websites are appearing along with high profile bloggers, with WiFi all around us, is the paper based guidebook in decline?