R' Chaim Kanievsky is probably the biggest בקי of this generation and is כולו תורה. Unfortunately the various tzedaka organizations seem to be using his name for all kinds of dubious campaigns that it is not clear that he would really approve of.
Some tzedaka organizations are turning him into a Chassidish Rebbe. According to them he is now accepting kvitels.
The Kupat Hair Bnei Brak has ads in Yated Neeman and sends out brochures all over the place with pictures of R' Chaim Kanievsky and promises that giving money to them will bring a ישועה.
However, R' Chaim's grandson published a letter from him where he quotes his own sefer (דרך אמונה) the הלכה פשוטה that עניי עירך קודמים.
You have to wonder then how can Kupat Hair Bnei Brak continue with their ads and brochures and mislead people into giving them money as opposed to their local kupa?