Pete, a Blogger Beta developer, visited my blog and clarified about the new URL for labels. It seems the change is to follow the rel-tag microformat so that tag-based applications can work with Beta blogs. Good move! I am also happy that my blog is under the radar screen of a Blogger employee.
Assuming that Pete will come back to my blog at some point, I have some rants below:
1. When I link to others' blog posts, my post doesn't show up as a backlink in their blog i.e. outbound backlinks from Beta blogs don't seem to work. I know that there used to be a nofollow meta tag in Beta template but I believe it has been removed (I checked in my blog too). Why doesn't backlinks work still?
2. In labels widget, the list of posts associated with each label is not available as data. Is this because each post could have many labels and there could be too many posts? If this was available, we could have displayed labels also in Hierarchy style which is much more flexible than Links list.
3. My migrated blog's comment feed URL gives me an error "We're sorry, but we were unable to complete your request.". Others who migrated have reported similar issues or stale comments in the feed (it seems to work fine for new blogs created in Beta). I didn't get any useful response from Blogger support when I reported this. Hope this is something being looked into. If this feed works, then it would be easy to show the recent comments in sidebar!
That's it for now :)