I have no idea how to stop these useless clickers.

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  Gangl Transfers: Does a high bounce rate have a bad influence on my Google ranking?
  
  Every day I have dozens of visitors from Brazil, South Africa, China or Thailand on my website with a 100% bounce rate. They click on my German home page and leave it immediately.  ;I am sure that they don’t need a taxi in Austria every day. But these clicks keep my bounce rate on a level of over 40%.  ;Without them my rate would be between 5% and sometimes even 0%.
  I have no idea how to stop these useless clickers - or is there a possibility?
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  promoz seo: If you are targeting only German visitors you can do two things. First use hreflang tag to clearly point out the language you are targeting. Second you can mention the country you are targeting from Google Webmaster ;tool ( International Targeting -> Country Tab -> Target users in ;) if you are using gTL Domains (.com, .org, .info, .net).
  Once you are done with this, gradually you will see that most of the site visitors are coming from German.
  Otherwise if you are seeing anything unnatural from any specific country/s then you can even block those using IP blocking but this is not recommended.
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  Richard Hearne: I'd be very careful following the previous poster's advice. Using hreflang when your site is already in German will have zero effect. That particular tag is for use on multilingual websites. Second, setting a target country, even if available, won't change things given your site is in German, all other things being equal.
  
  My advice is to first check where all these high bounce visits originate. My guess is that this won't be organic traffic at all. Google generally won't want to drop users from those countries on a DE homepage. If it's not coming from Google's serps then they can't know about the bounce rate. 
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  Gangl Transfers: Thanks to promoz seo and +Richard Hearne
  I have set my international trageting because I have translations of my German site. My customers mainly come from the UK and the Nederlands.
  I think that the clicks do somehow come from Google's serps because it also has influence on my Alexa rank.
  Is it possible to exclude certain countries from viewing my site?
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  Edwin Jonk: Alexa rank is based on a browser plugin, so it can impact Alexa rank. However, for most sites Alexa rank is useless because the number of people visiting the site don't have the browser plugin or too many visitors have the browser plugin (which can lead to a huge Alexa rank.). Google ranks sites differently and both cannot be compared. ;
  
  On our sister-community I shared a link where the expert panel is discussing Alexa rank and an article where Alexa rank is explained in-depth [1].
  
  We regard to having a multiple lingual site [2], your setup is quite confusing and I am pretty sure Googlebot is having issues with it. Namely the recommended way is to use sub-directories or sub-domains. And to make it more clear you can use href-lang [3], but to me a clear URL-structure should be on a higher priority level.
  
  [1] ;https://plus.google.com/115968564928707155219/posts/KYFc7no4pJq
  [2] for example http://www.gangl-transfers.at/about-us/about-us?lang=en versus ;http://www.gangl-transfers.at/about-us/about-us
  [3] ;https://support.google.com/webmasters/answer/182192?hl=en
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  Daniel Lloyd Barrett: 40% bounce rate doesn't sound too bad!
• 
  Richard Hearne: What's your site URL?
• 
  Edwin Jonk: +Richard Hearne​ http://www.gangl-transfers.at/
• 
  Gangl Transfers: +Edwin Jonk
   ;Thanks Edwin,
  I guess I have to do some changes. Thank you for your help.
• 
  Gangl Transfers: +Richard Hearne
   ;www.gangl-transfers.at
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  Gangl Transfers: +Daniel Lloyd Barrett
   ;Hello Daniel,
  yes it is not bad, but without those strange clicks it would be much better. That is what I am running after.
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  Daniel Lloyd Barrett: +Gangl Transfers I'd be more concerned if the bounce rate was 0%-5% which doesn't sound realistic