I use a lot of categories. I find that specificity helps people find postings.
I started my blog last 10/29, and I'm up to close to 600 categories. But Category functionality is breaking down in WordPress. Not all categories are visible in the WRITE screen. If I add a new one, it attaches to the post, but if I re-edit the post, I often lose a new category or two.
Is there any other desirable method of bringing this kind of issue to the attention of the design team?