I'm having a weird issue whereby if I edit a post I imported from Blogger (all posts before Feb-March 2012), even doing something as simple as adding a tag, it shows up in Google Reader as a new post and on people's blogrolls as my latest post, even if the date stamp (which doesn't change in my dashboard) is a year old. This does not happen if I edit more recent posts written in WP.
This link explains the issue and my tests.
I wasn't following myself until someone alerted me to this issue and I began testing, so I have no idea if it was happening before.
I periodically update tags--any idea how to avoid spamming people with "new" posts when I do this? Thanks!
The blog I need help with is slywit.wordpress.com.