Launchpad AJAX changing user habits
Check out what happened when AJAX bug tags editing landed in April:

Note that since Launchpad has the edge/production split, so the changes in the graphs are less drastic since a set of users start interacting with new code before others.

Yann Said:
Is this a % or a number? If plain number it doesn’t seem to incredible to me that the number of bugs as increased in april, just after the release.. and the ratio number of tags/bug seems quite stable? s, what happened?
beuno Said:
Hi Yann,
They are %, and the increase is in the number of bugs that have more than one tag.