Did you know you could just Alt-tab out of Lifeblog on the PC and let it hang out hidden in the background (say, when synchronizing)?
Here are some others:
Transfer items… Ctl-K
Post to Web… Ctl-B
Exit Alt-F4
Go to Date… Ctl-G
Large item view +
Small item view –
If you want to see all the shortcuts for the PC and mobile software, just hit F1 to open the Help file on the PC.
I posted on the mobile shortcuts here.