http://www.divshare.com/ - unlimited files, unlimited downloads. No registration required, no popups.

http://zupload.com/ - 500mb per file maximum. Unlimited downloads. Files deleted after 30 days without activity.

http://www.4shared.com/ - 1gb of space with free accounts. Unlimited downloads. Deletion after 30 days of inactivity. There is a small delay before you can download files, but no popups.

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"you are terrifying
and strange and beautiful
something not everyone knows how to love." - Warsan Shire