Uh oh, be careful!
I think 4-shared may have been hacked or something. I went to download some files (I tried downloads of different people to be sure it wasn't just one account, it wasn't) and my virus software blocked portions of the 4-shared site giving me the following message:
So, please be careful when you go to 4-shared and if you don't have anti-virus software in place, I strongly recommend that you get it asap. There are different free ones out there too... I use Avast.