... or:

The welcome-bots have taken over (again)

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Did you notice, how every # introduceyourself gets instantly flooded with a bunch of automated comments ?
I'm really fed up with it. I've tried talking to the people running them. I've tried shaming them. I've tried retracting my witness vote.

They won't stop !

This happened before. @wang was quite successful with it.
Then his comments got downvoted.

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Since you can't help spamming and wasting precious bandwidth, unnecessarily bloating the blockchain, here are some tips on how to fix your bots:

To make sure you only comment every user once:

already_commented = []

if not newbie in already_commented: 

   introduction_post.reply(body=welcome author="yourbot")

   already_commented.append(newbie)

In case the bot crashes, this won't be saved.

Better save it:

with open('already_commented.csv', 'a') as commented:

    writer = csv.writer(commented)
    writer.writerow(newbie)

Or you could use SteemData:

from steemdata import SteemData
s = SteemData()

q = s.Posts.find({'author':comment_author, 'tags':'introduceyourself'}
                  , projection = {'permlink': 1, '_id': 0})

tag_used = len(list(q))

This will return how often an author has used # introduceyourself ( SteemData is not real-time, but takes a snapshot fairly often. )

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Beyond that, please consider turning those annoying bots off.

Please also reconsider auto-voting for any form of introduction.

In case you didn't notice:

It's being abused.

I would love the steemcleaners to step up to the challenge, but since I run @goodbot, I can see it happened 1162 times in 21 days. And that's only 3rd time users and beyond.
If anybody has Steem Power to share: At this point I'm willing to just auto-flag those repetitive uses of the newbie-tag along with all the automated welcome messages.