You can upload about 140 different formats. There's even support for .RAR and .ZIP-archives! If you upload an archive with multiple images, you'll also get an album-address for all the pictures inside of it. Tags are separated by spaces, removal code is a password to let you remove images you upload.
Max file upload size is 100MB. If you're crazy and upload that much, then you should consider getting friends.
from 30min to 1week
upload files (max: 500Mb) online for 5min to 1 week - send the link
Send upto 100MB, links stays between 30min and 1week according to user pref.