Google is probably one of the most important sites you can find online right now. Though you can find a few things if you know the direct web address, most things are found online through search engines. As far as those searches go, Google is the king, at least at the present time. They have a way of staying ahead of the curve, and that is why they remain the most popular. Orkut is just one of the things they have added to keep the interest growing.
The reason Orkut is so interesting is because it can be used as both a professional and a personal networking service. Most who are on there use it as both. It is different in that it encourages people to give out their contact information for business reasons, and it makes it very easy to people to search to see what is there. When connecting for professional contacts, you want to be reached easily, so it makes sense that if someone has a phone number on Orkut, they are going to be found easily on this site.
When you go to typical social profiling sites, you won't see them encouraging you to share your personal contact information. In fact, many go out of their way to discourage you from doing this. This is mostly because there are children that use them, and putting up such information can be a very bad idea. When it comes to professional networking, everyone knows this is the best way. Those signing up can decide this on their own, and hopefully, they are all of legal age.
Sign up for Orkut when you get there, and then look at your own profile. You don't have to add your own information if you don't want to, though you can if you like what you see. Those on this site have the option of leaving contact information private, for friends only, or completely public. When you are done with that and ready to search, use the search options you see, much like you would use the options on any search site.
When something comes up, you may be able to look at the profile to see if that person is the one you are looking for. If you are not sure, you can take the phone number you found and use a site that can give you more information. These allow you to search a phone number to see if a name and even a location come up to confirm or dismiss what you have found.
Dan Krasky writes informative articles about telecommunications and phone numbering. You can find the caller source of any U. S. phone at http://www.searchthisphonenumber.com