I shut down my homepage at wordpress.com since it wasn't absolutely unclear to me which data was collected there. I decided to run the homepage on my own server again, since I know exactly which data is collected here: There is the Apache log with the requesters IP stripped away:
CustomLog "logs/access_log" common
#LogFormat "%h %l %u %t \"%r\" %>s %b" common
LogFormat "%l %u %t \"%r\" %>s %b" common
Nothing else. And since I'm quite bad in CSS, it currently looks so ugly.