Thanks for your thoughts. Yes, there is a cookie based plugin, but I often work on seperate computers, at home, at my college and so on.
It’s probably not the best manner for blogs with many registered user, but for my specific usage it should be fine. I’m working on a private group-blog for me and my friends, about 15 people overall.
In order to keep the table small I could delete entries older than a configurable amount of days, 30 or so.
Anyone else with the need for such a plugin and feature wishes/suggestions?