by uploading bytes of a single 1mb image, yes just one...for instance a HD desktop background. that single file will fill the block and stop proper 'value' transactions.
by just uploading hyperlinks to file locations will still bloat each block but to a much lesser extent. but then you are just bloating the blockchain with data that after a couple years may have been taken off the server you linked.
bitcoin is to be around for atleast 100 years. stop thinking of silly uses that only are temporary gimmicks that have no usefulness in 20, 50, 100 years
Just no more data injection attempts into the main chain please
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+1