Probably, this is the reason why Jiyeon doesn't update her twitter in the past months... At the young age Jiyeon faces many trials as an idol. I know, she knows what are the disadvantages of being an idol, but still, she doesn't deserve to be hated and unwanted.
seriously ,i don't see any reason to dislike or hate her. She is the most dilegent 18 year old idol i have even known. She may be lack in some skills, but she is willing and ready to learn and improve it.
Jiyeona...fighting!!!just ignore your detractors and focus on your dreams. We are all here to support you *sobs*