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Though I would say the main reason why you have a bad bounce rate is the source of the traffic if they were coming through a targeted keyword from google you would have a better bounce rate. So you have to put something at the top to get a visitors interest.  but if your traffic is anyone like me (don't drink) they just bounce because of the topic.

just update the page I have done it quite a few times in google places also try to update most of the main citations you have on the web

Search Engines do not use meta-keywords for ranking.................

I would never use all the keywords you are targeting in that meta it makes less work for you competition to outrank you

I would not suggest  reciprocating links to start get your google local listings in order and submit to every local placement site. Go for citations more than links at this point try to work on social media.  Don't be in a rush to build links it could hurt you.

Just about every site when you search google that offers backlinks for money you should avoid.......  Try local news sites and sites like Patch

Get some more content on the home page about emv cards than run some campaigns for backlinks like infographics or press releases you shoudl be able to get in the top 3

It will pass link juice.  But a sub-domain acts as its own domain so think of it as another domain.

Try to rewrite them if its content that is attracting people on your site it may attract people from the search engines too....  Should be worth the effort

If you have the man power to post quality content to the blogs it can only help I would not stop your blogger/wordpress blogs just to have it on your own domain

nofollow is not a good idea if you have a good pagerank I wouldn't worry about it.  But remove duplicates first..

go buy them.... jk

Work on good content... And other strategies depend on what type of website if you have a community take advantage of it.

that jk was just kidding don't do that

If you can get on it its worth it.....I think all the admins died and went to hell nobody will update my listing with the correct business name FML