Woot: Pay $5 Shipping Once, Then Free Shipping the Rest of April

Woot.com is great for getting a lot of discounted items. They are from Amazon. They always have great cool and funny shirts for cheap, usually $8-$11 but you always have to $5 shipping. $5 for just a shirt or even for a huge tv. However this month you just have to pay $5 once then get free shipping for that rest of April! That's a lot of savings if you regularly buy shirts and other items there.