Notification of Summit Log signing
One of these options when someone signs a summit log for a page you own. :
1) Email notification
2) Notification on your profile page, similar to comments on your objects.
Perhaps even a global option where you can sign up to get notified (email or within your profile page) when a mountain of your choosing has been signed.
OK, I modified the idea slightly. I agree that email notifications may be a bit much.
Sarah Simon commented
I agree with Visentin - I would prefer an online notification within my profile to an email notification. My inbox already spilleth over.
Perhaps not an email alert, but an expandable window like people who commented your pages and so on