Ever wondered what other sites where there in ur shared host server? There are several sites that can help you in finding which sites(domain) shared the same ip address. This is done using Reverse Ip domain check. You can clearly know whether the host server is overcrowded and henceforth the sites are slow.
Popular among them are myipneighbors.com
For those on shared hosting, myIPneighbors IP search is a great way to find out who your neighbors are or just to see how many other websites your hosting company hosts your server. Read more…

Pownce has lifted their invite-only status and added a ton of new features. Sign up to send files, links, events and messages to your friends.What’s Pownce?
Pownce is a way to keep in touch with people and share stuff with them. Send files, links, events, and messages to people you know and have real conversations about them.
What can I send?
There are four basic things you can send: messages, links, files, and events.
http://www.pownce.com/
Update:
Pownce was closed down on December 15, 2008. The engineering team and technology are now a part of Six Apart.