Hot Sheet readers love tips and tricks that allow them to quickly review the success of their own interactive marketing efforts. This gem from January 2010 allows readers to determine if important parts of their web page are visible by a wide audience.

What time is it in Frankfurt? Google "what time is it" followed by the name of the city, to get the local time in any location.

Are you smarter than Google Maps? Create your own route and send it to your friends. Click on "My places" and then "Create new map."

This location-based Q&A platform utilizes existing check-in platforms like Foursquare and Gowalla. Use the service to ask a question to anyone checked into these services, "Are there any tables open?" and get a real-time answer.

If you're looking for more information on a location before you travel there, consider utilizing the Wikipedia layer for Google Maps. Click on the menu at the top right of your Google Map and select "Wikipedia" to display articles that correspond to each area.