tiplog output is confusing because it attributes all tips to me

I have that tiplog:

C:\work\Bazaar\plugins\tiplog>bzr tiplog
06/26/12 tip:0 33 <email address hidden> [pull] Use lazy registries if supported (introduced in bzr 2.6) (Jelmer Vernooij)
10/05/11 tip:1 24 <email address hidden> [pull] Handle bound branches: log changes to both local and master branches
09/28/11 tip:2 18 <email address hidden> [pull] Add try-except to prevent failure on missing dateutil.tz
09/28/11 tip:3 16 <email address hidden> [init] Address issue found by Alexander Belchenko <email address hidden>: initial

Apparently all the revisions above authored not by me, but by the other person. In the same time tiplog output is very close to `bzr log --line`:

C:\work\Bazaar\plugins\tiplog>bzr log --line -l3
33: Brian de Alwis 2012-03-31 [merge] Use lazy registries if supported (introduced in bzr 2.6) (Jelmer Vernooij)
32: Brian de Alwis 2012-02-25 Missing text_width is None test for win32; revbump
31: Brian de Alwis 2012-02-24 Fix see-also on tiplog command

So it confuses me.

What is the purpose of my e-mail as id in tiplog? Does it show the person who made the change of tip? Is it really important? Maybe it will be better to don't show it unless --verbose is used?