Guys I've been meaning to mention this for awhile, but the 300 character limit is there for a reason. If you can't stretch out a story/point to a small paragraph then it might not need to be a diary.
Just add a few sentences of your own thoughts/analysis and you shouldn't run into any problems. The character limit is there to encourage more substantial posting in the diary section and it's worked pretty well on other sites like Athletics Nation. Thanks!