When we are talking of 350 rank loss penalty, it should be considered same as 30 rank loss penalty. Here you loose 350 ranks behind your original rankings. The loss of ranking is due the unethical method used for ranking up your site. The main reason behind 350 rank loss penalty is excessive link building done for your site to achieve rankings. So if you don’t want to be a victim of 350 rank loss penalty then never use excessive link building for your site. These are temporary penalty. But if your site is earning good, then due to rank loss you will have to suffer too much.

So never indulge your self in unethical way of link buildig and excessive link building. Keep yourself out of 350 rank loss penalty and increase your revenue and sales to maximum.