I have seen votes at 0.7%! What then happens is that people follow the trend, not realising how it all works.
If a vote does not register it goes into a dustpile which then gets distributed back proportionally to the holders of SP - thereby handing even that lot to the top 100 or so. I have seen tiny minnows voting at 5%.
There is a counter argument which says, as your vote is worth so little, all that matters is that people see you voted for them! So, with a vote worth $0.0001, what's the difference - vote like crazy and see if you can pick up some followers.
Personally, I would ban it. But ... I just know where the system is heading.

This is @fyrstikken's idea.

https://steemit.com/winfrey-guild/@fyrstikken/the-winfrey-guild-48-hours-report-and-debate-feedback-wanted

the 'winfrey guild' upvotes everything with 1%.
I think it's a complete waste of energy, completely pointless and somewhat annoying; 

But it's their Steem Power and they can use it, as they see fit.

My votes are always 100% manual, any post, replies too. :-)

I'm curious too!

That's something I still don't understand either.

When there was someone flagging everything and everyone, though, these 1% votes helped to cancel it out. So that's where I did understand the value.

Never less than a hundred percent here :-)

<p>This post has been ranked within the top 50 most undervalued posts in the first half of Feb 17. We estimate that this post is undervalued by $3.61 as compared to a scenario in which every voter had an equal say.</p> 
<p>See the full rankings and details in <a href="https://steemit.com/curation/@screenname/the-daily-tribune-most-undervalued-posts-of-feb-17---part-i">The Daily Tribune: Feb 17 - Part I</a>. You can also read about some of our methodology, data analysis and technical details in <a href="https://steemit.com/curation/@screenname/introducing-the-daily-tribune-most-undervalued-posts-of-nov-04---part-i">our initial post</a>.</p>
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the cursed 1% vote.

very controversial indeed.

The pros are pretty much all for the voter the receiver doesn't really get much in return.

Some will argue that with a 1% voter can vote more often and there for spread the wealth.

They would need to have well over 30,000 sp probably more in the high 100k's for a 1% vote to give rewards to an author.  How ever the voter will still get 1% of the curation rewards.  If you vote 200 times a day it could add up.

The receiver will feel like crap and like I mentioned, if the voter has such low sp, the author will probably get nothing they can notice in terms of rewards.

Too many l% votes and no or little rewards will chase away the whale bots that are vital for a post to get decent rewards. 

Everything is working as planned i would assume.

I was just to write about this topic as well! I do not see any sense on that - to save your voting power I can for sure understand you vote lower as 100% - when part of a curation trail I do understand sth like 20% as well but 1% is a waste of time and annoying