and I've been tracking my cycles since last summer, although I've only just started charting my temps a couple of months ago. The information seems very useful, although it's nothing I can't deduce with a little extra time looking at my chart (when using the free membership). I was just thinking last night of ordering the VIP membership, so this was a nice surprise.
Too bad I'm only on CD 4 and probably won't ovulate until CD 16, so it won't help me very much.