We recently went through some of the best ways to share files with a nearby computer, and many of you noted that Dropbox can still be a viable syncing method, even over Wi-Fi. Here's how to set it up.
In our rundown, we noted that Dropbox, while one of our favourite services ever, isn't ideal for sharing with your friend sitting right next to you. While you can use Dropbox to share files with anyone, you usually have to upload it and download it from Dropbox's servers first (which takes longer than sharing over Wi-Fi, Ethernet or the other sharing options we mentioned). However, if both you and your friend have a Dropbox account, you can, in fact, use it to share files over your Wi-Fi network.
All you need to do is share a folder from Dropbox's web interface. From the My Dropbox view, hit "Share a folder" and choose the one containing the files you want to share. You'll be prompted to invite your friend to view the folder. Once your friend accepts the email request, the folder will show up in his or her Dropbox and they'll start to download the files. If you're on the same Wi-Fi network, Dropbox will transfer the folder over Wi-Fi instead of the internet, thus speeding up the process.
Note that each computer also needs internet access for this to work, so it won't work with the ad-hoc method unless both computers are wired up to the internet, or if one computer is wired up and sharing the internet over the ad-hoc connection. It's generally most useful for the first method we mentioned, when you're both on the same secure local network.
We still don't know if this is the most useful method for everyone (after all, it only works if you friend also has a Dropbox account), but if the conditions are right, it's probably the method that requires the least setup — just create a shared folder, drop the files in, and go. Hit the link to read more about how it works. Thanks to everyone that brought this up in the comments on our initial post.
What is LAN sync? [Dropbox Help]