PolkaDot 1.2 has two new features. First, the RSS feeds have been expanded to include the category-specific feeds. In other words, if you use the RSS feed on the Tea page, then you'll get just the tea-related posts.
Second, PolkaDot now lets you page back to earlier posts. Just scroll down to the bottom of the page. It's not very sophisticated. (Nor is PolkaDot as a whole.) But it works.
Another change is that PolkaDot now actually uses the correct construct for fetching parameter values from the query string. I was lazy in the initial coding.
I don't have any other major features planned.