No RAW uploading, no thank you!
Flickr lets me upload RAW, right from Lightroom. Yes I know, Flickr stores the files as high res jpgs (so jpgs is all I ever will get back), but at least I don't have to do the conversion on my end before uploading.
I'm currently paying $25/year to Flickr for unlimited uploads of full res photos. I'd be willing to pay double that if Carousel stored my RAW files as RAW and offered better organization tools (i.e., albums, sorting by EXIF data). But $100/year? No way! I'll stick with Flickr.