what are some good alternatives to flickr for photo sharing?

i’ve been using flickr for a few months, a free account. i have reached my 200 photo limit and it prompts me to upgrade to a pro for 25 dollars. before i give my money to flickr, are there better places to share my photos? (also in case microsoft makes some deal with yahoo…) i’ve seen smugmug but i don’t know anyone who uses it/details.