Trade of Google+1 "Likes" as a Business
siliconbits writes "Selling Google+1 "likes" is gradually becoming a rather lucrative business, helped by cheap labour and ever-falling internet access worldwide; the trend is not unlike what we saw previously with Twitter & Digg during the days except that this has a more widespread implication for SEO and could turn the nascent social networking service into a massive headache for Google as many try to game the system. Google+1 selling sites like Googleplus1supply, buygoogleplus1 or Blackcatseo have cropped up during the last few months — amongst so many other websites — with the sole aim of selling Google+1 "likes" to publishers and businesses."
The only thing that Google+ is saying about their +1 affecting search ranking is that it will only increase the ranking of sites that people in your circles have +1'd.. so unless you plan on following a bunch of spam bots on Google+ I really don't see how this is an issue..
"+1 helps people discover relevant content—a website, a Google search result, or an ad—from the people they already know and trust"
http://www.google.com/support/webmasters/bin/answer.py?answer=1140194