Not sure, but you can go to UserCP Under setting and options on the left hand side there should be a edit signature click that, then at the top will be a picture of a World with a chain looking thing underneath the smiley face. Click that and paste in the URL to your grow log, then hit ok. Once that happens it will be in your sig and will have 2 links in it. The first is to link the actual page and the second one (which is the same as the 1st and will be highlighted) you can write whatever the name of your log is in it.