A few days ago I took part at „WIAI goes CeBIT“.
Here’s our tour in short:

• Listening to „B2B Communication and web 2.0“ – this was unfortunately just about fb and twitter
• Walking through mostly every hall – a bit too much hardware in my sense
• Receiving some information about Online shops and E-Commerce – especially payment protection and main principles (do it simple)
• Getting free coffee, water and sweets – the coffee was „delicious“ ;)
• Listening to „Mobile Livehacking“ – very interesting, trust no one

Update: Hallo Welt! GmbH interviewed us very shortly – you can see my contribution in the following: