I am new here; i just joined today. But I haven't been posting answers, I just solve them and go right ahead because the LaTeX formatting never comes out right in the preview.
Just now, I finally decided to post a Math answer anyway, but it was unreadable. I deleted my answer, thinking I'll answer the question again - but this time I'd format it offline, take a screenshot and upload the image. Alas, I was not allowed to post a new answer.
I must say it is a rather frustrating experience.