Information technology is supposed to provide services and to support work. The term service is used in different ways, for both parts of a system and for what a company provides in electronic form. Common is that it describes the encapsulation of some functionality so it can be used to process data in a well defined way. The use of information technology is changing though. It is now supposed to serve individual users with their knowledge work and it is supposed to improve cooperation between organisations and access in general. Applications as they are used now leave too much work to the user and even require extra work around their limitations and to learn to use them. Structural computing tries to provide a new kind of services working with structures instead of data to support knowledge work. Web services on the other side are an attempt to enable cooperation between organisations. Both have a problem in relation to individual users. At the same time new applications like blogs and wikis gain ground. They adopt more easily to their users needs and are successfully used both in private and for knowledge work. They express a different view on the use of information technology. This paper tries to show perspectives blogs and similar applications can give on services and system architecture.