If you tell themwhere you are, they can tell you which of your friends are nearby. They call it “checking-in”. You can check-in from a park, bar, museum, restaurant, whatever.  Check out http://playfoursquare.com/overview to learn about finding where your friends are located in a city near you.

This site has 10 great tips/tricks on using YouTube.

I just learned you can add holidays to your Google Calendar by clicking the Add button in the “Other calendars” section.  After you click the Add button select “Add a public calendar”.   

Click the “Add Calendar” button to any public calendar you wish to add to your calendar.  For instance as you can see in the screenshot below I added the Phases of the Moon, Google Doodles, and US Holidays public calendars.  If you didn’t already know this trick (like me), I hope you find this useful.

Unlockforus.blogspot.com has an awesome tip for downloading HD YouTube videos.  Start to play an HD YouTube video and then copy/paste the following code in the address bar and hit enter on your keyboard.  It should prompt your browser to download the HD video without any software or additional websites.  I just tried it so I could show a friend a video whenever I want.  Very slick…

Code/Paste This Code
javascript:window.location.href = ‘http://youtube.com/get_video?video_id=’ + swfArgs['video_id'] + “&fmt=22″ + “&l=” + swfArgs['l'] + “&sk=” + swfArgs['sk'] + ‘&t=’ + swfArgs['t'];

Let me know what you think – here are some YouTube HD videos – http://www.youtube.com/hd

Have you ever had a video you have on your computer which you want to turn into a DVD to play on your big screen television or send to relatives?  With DVD Flick you can take a video file on your computer and after a few hours of data crunching (depends on speed of your computer) it will burn the resulting file onto a DVD for you.  Give it a try it works great…