Agencies compete all the time, to be first in sending their best wishes in augmented reality mode, with a hashtag hidden in a hologrammed QR code or an interactive GL Web video. Every year, the bar is set higher and the period is overcrowded, with customers' and journalists' letterboxes saturated.

In fact, the real challenge is even more daunting than creating an app overnight.

The real challenge is in finding an innovative idea to wish our clients all the best.

Today, the whole world prides itself in knowing the best fishmonger, the best hamburger, the best boutique in the neighbourhood, in Paris, in France, in the world. In the interests of unanimous consensus, we now offer you: the best guide. 113 of our best employees wrote 113 articles on 113 categories.

Settle yourself in your best armchair, listen to your best music and enjoy. A black block, a golden badge and a pedestal: from the envelope to the colophon, the whole BETC agency wishes you all the best.

You're not going to believe this but a little bird told us that, in 4,000 copies and 191 pages, around 230 million words were read and shared by our contacts. It's up to you to convert this into the number of YouTube viewings.

This guide is more than a simple collection of addresses; it is a mosaic of true stories that belong to their authors. It was sent to each of the brands, venues and restaurants mentioned, each then proudly relaying them to their fan bases.

The best thing was, incidentally, to see our 800 employees devour their colleagues' stories, smiles hovering on their lips as they discovered the hitherto unsuspected passions and talents of their fellow workers.