why do people write blogs on here?Watch
For some people it's therapeutic and easier than keeping a diary, some use the study blogs to keep themselves motivated or better-organised
Personally I can see the attraction. It's fun to vent to the internet, get encouragement and advice (particularly relevant for grow your grades blogs) and generally chat to interested users. I considered one of the summer beach hut blogs to motivate me to spend more time working and engaging my hobbies rather than sitting around doing generic internet-ing, but I don't want to share any potentially identifying details about myself.