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some of these platforms will be fun to explore, others will be boring

yup..but what's boring to one person is exciting to someone else.
stamp collecting for example...never got much out of it myself.

nothing wrong with just using Steemit all on it's own. I tend to like the forum format, others want a Twitter-style setup

I guess one of my hobbies is looking at new end-user apps and comparing features

I've gotten used to Steemit...it could use some 'tweaks'..but on the whole it's OK.