French Defense: Knight Variation

When I play live blitz chess, i often mean this variation:

1. e4 e6 2. Sf3

This variation is the 3rd option (after 2. d4  and 2. d3 (King's Indian Attack)) on both chess.com (1824 games) and chessgames.com (740 games).
The reason behind this move is probably is that it is a naturell developing move, it develops the Knight to a good square.

Responses suggested by Opening explorers is:

2... c5

• 28,317 games on chessgames.com
• 66,854 games on chess.com 
• 62,423 games on chesstempo.com

2... d5

•  668 games on chessgames.com
• 1676 games on chess.com
• 1367 games on chesstempo.com

Playing 2... d5 can transpose to French Exchange variation, or the Two Knight Variation (Good live video with commentary on the Two Knight Variation).

My opinion on this opening is to play d5, because it stays in the french,  we can reach exchange variation or the advance variation with a knight on f3. Are you familier with The Sicilian opening feel free to place c5 here directly.