You can upload logs directly to GPSLog Labs from your iPhone or similar mobile device using your unique email upload address.
Click on your device icon on the home page to find your device's unique address. It will look something like firstname.lastname@example.org.
Simply send the log file or files as attachments (zipped if you like, it'll be faster that way) and then you will receive an email containing links to the activity in GPSLog Labs once it is processed.
You can add tags to your activity by entering them in the subject line like: ((tags: Bike)) The tags will be matched as smartly as possible, you only need to put enough of the tag in to make it unambiguously match one of your existing tags and the text case doesn't matter.
The rest of your email title will be added as a note on the activity.