At the moment alot of the 'group' type activity happens on Discord - it will be interesting to see how the functionality is introduced to Steem...

I think lots of people are getting sick of the endless memos.. I have just learnt to blcok them out and just tell myself they are giving me free money! But yes a spam filter of sorts I think would be a good way forward - maybe a similar way to how email is filtered to spam folders?