We all use it at one time or another: free wi-fi. But is connecting to an open and free network a good idea? This infographic illustrates a few reasons why you should practice precaution when logging onto a free access point out in public...

So what if you're someone who like to live on the edge and log into public wi-fi regularly? Alongside the tips noted above, take a few precautionary measures and you should be fairly safe, unless someone is specifically targeting you. Here are a few solid tips via Lifehacker about signing on safely (or rather, safer) onto public wi-fi (especially of note for airport and hotel guests):
- Turn Off Sharing
- Enable Your Firewall
- Use SSL Whenever Possible
- Consider Using a Virtual Private Network
- Turn It Off When You're Not Using It

Z2 iPod Dock and Wi...
If your laptop is properly protected by AV and firewall, you are safe.
However, the person who left their wifi open is liable for whatever nefarious activity you perform on their network.