Social search engines are a great way to search across many social networking sites at the same time. They make it easy to find new friends, old friends, people to network with, and people with the same interests as you. Below are three social search engines that you may find helpful in expanding your network or friend circle.
Whoisi is an easy to use search engine, currently in public beta, that allows you to find out what your friends are doing. The Whoisi search engine is unique because it’s public and can be edited by anyone, just like a wiki. Best of all, there is no sign up required and your friends do not have to participate on the site in order for you to keep track of them.
I did some research on iPhone specific websites and found out, to my surprise, that there were quite a few out there. Aibek has covered iiPhone web apps before, but here’s a small list of more websites specifically designed for the beautiful iPhone.
Information / News Web Apps :

CBS News: www.cbsnews.com/iphone
Fox News: iphone.foxnews.com
Google: Google.com
Reuters Mobile: mobile.reuters.com
BrainyQuote: www.brainyquote.com/iphone.html
Social Apps :

Digg: www.digg.com/iphone
Facebook: iphone.Facebook.com
Twitter: m.twitter.com/login
Reference:
Wikipedia: www.keishi.net/ipodia/
People Finder: www.2robots.com/iphone/#_ByNumber
Urban Dictionary: www.idotg.com/apps/iwurd.php
Realtor: iphone.realtor.com
Weather Web Apps :

AccuWeather: apple.accuweather.com/widget/iphone1/iphone.html
Weather Underground: i.wund.com
Weather.com: www.weather.com/iphone
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