Sometimes my friends ask the irksome question : I have a file with unknown extension (file format) but I do not know how to open it? This is the most annoying question, why because they can surf Internet to know about the file. So, I often tease them by using the method described here Tease your lazy friends! Let’s help them by introducing a website which provides details about the file... 

Most recently I have found an application on orkut which helps human community. Yes, blood search is an application to enable users to search blood in their network of friends. Unfortunately, there is no region-wise search of users who are willing to donate blood, but introduce this application to your orkut friends so you can help others and also you may be helped by others when in need. This is...