since 3 days ago my site's traffic dropped ! anyone got some problem too ? i hate if this happen ! usually got more than 1k uv/day and now only 500- 400 /day !
You should firstly know where's the traffic mainly comes from, if it's search engine, it's not strange.
I haven't seen a drop... Do you have any stat programs? You should be able to figure out pretty easily with some stat tracking where the loss is from.