Microsoft SeaPort.exe Process
The Microsoft SeaPort Search Enhancement Process seemingly comes bundled with the Windows Live Suite regardless of what options are chosen by the user during installation. The explanation of SeaPort found in the description field of the Services Administrator Tool is that SeaPort, “Enables the detection, download and installation of up-to-date configuration files for Microsoft Search Enhancement applications. Also provides server communication for the customer experience improvement program. If this service is disabled, search enhancement features such as search history may not work correctly."
Assuming that is a fairly accurate description, then it would seem that the SeaPort service is essentially an automatic updater for “Microsoft Search Enhancement applications." So, it seems that search history is one of the search enhancement applications.
However, seaport.exe runs automatically and continuously upon startup regardless of whether any searches have been performed or browser windows opened. Indeed, the SeaPort service is set to Automatic. That means that it adds additional time to the boot-up process and that its resource usage starts immediately.
SeaPort.exe appears to use approximately 4.5 MB of RAM. All of this seems like a bit much for a process whose only function is to download and install configuration files for a little used enhancement to the search function. If one never uses search history, then the extra boot time, and memory usage, not to mention network bandwidth is wasted. With Microsoft so frequently accused of bloat in its systems and programs it seems an odd choice of what to use precious system resources on.