| Personal Homepage | TheWorld-Is-Mine.com | |
| Business Networking | ||
| ** | LinkedIn.com | Contact Page |
| *** | Plaxo.com | Contact Page, Free/Busy, Calendar |
| ** | Xing.com | Contact Page, Invitation Link |
| China | ||
| * | Guanxi.com | |
| * | Schanghai.com | Profil |
| * | Shanghaiexpat.com | |
| Directory | ||
| *** | Del.Icio.us | My Bookmarks |
| * | Dmoz.org | JohannesRiedl.com |
| *** | ||
| Personal | ||
| * | Amazon.de | Wishlist |
| ** | golfclub-gaeuboden.de | |
| *** | Imdb.com | Cinema, TV, Series, Games, 2Watch |
| ** | Junge-Union.de | |
Study |
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| * | Hi5.com | |
| ** | StudiVZ.de | |
| * | Munich-Business-School.de | |
| Technology | ||
| * | BPMInstitute.org | |
| * | Hive.net | |