[Rails] Uploading Photos - HowTo with Rails 3 ---- Which Gem?, S3?

Hi,

Here's what I'm trying to achieve:
1. Allow users to upload a photo for their profile
2. Allow users to upload photos as blog posts

That being said, here's what I need your expert opinion on:
1. S3, is this still the best choice? Any better easier, Rails3 like
alternatives? Or should I go with S3
2. What Rails 3 Gem supports this best? Allowing me to upload photos
to S3 and assign some type of referenceID throughout the app for USERS
& BlogPostings.

Eager to hear your suggestions.

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