I have always liked 'propping up a dodgy memory' though I would be inclined to lose the 'it's for me to keep track of myself'--though to be honest I didn't even know it was there til you pointed it out.

I do think though that the blog title is not something that people care that much about with lj blogs because you find them and refer to them by username--as evidenced by the first several people thinking you are referring t 'stephbg'--if you were to be writing on a different blog platform I think that it would be more of an issue, though I would still like 'propping up a dodgy memory'.