I don't think so yet but there may be a time when it comes in. you can let them comment if you add them as a co-collaborator.
All blogs were originally dofollow. That means that when Google scans your page, it would scan all the outgoing links and "follow" that link and give it credit as a reputable website. Spammers took advantage of this and started leaving spam comments using bots to make there spam websites seems creditable. Because of this, Google wants everybody to have there blog set to "nofollow" which means that when Google scans your blog, they will not follow any of the links in the blog comments. People who leave REAL comments on blogs get pissed because Google does not follow there links and give them credit. So some brave bloggers change there blogs to "Dofollow" so they will get more blog comments from people who want a more credible backlink to there site.
The more stuff you have for others the more people will visit. The more "advanced" your site becomes the more popular it will be. Be friendly, nice, that sort of thing and people will always like visiting your site. Visit other people's sites and leave nice comments. Always remember to include your site URL with your comments so people know where to go to visit your site. Don't be afraid to send a friend invite. Sometimes people are too shy to do that so if you take the initative to do so you will get more friends added.
google does not always have all the answers, and sometimes people do not want to search for it on google.
The benefits of using google are that you can type in a keyword and it will find a website closely related to the word. Google finds the best site by sorting them out by times the word is repeated and how many people go to the site.
Google Webmaster Tools allow site/blog owners to analyze their sites, discover problems, and find what Google queries are bringing traffic to the site.
In order to verify that a site is safe, you should probably seek out sites where people can testify for or against the site. The best way to verify the safety of a site is to take heed of the general thoughts of other users. Looking at the comments on the site itself is sometimes not a safe idea as the site can filter which comments they wish to publicize.
Bounce rate relates to the percentage of single-engagement visits to your site. Google Analytics tracks the number of people who visit your page and leave without viewing other pages on your site. Bounce rate does not necessarily mean you need to improve the quality of your site
Google+ is Google's social networking site.
Do search engine optimization. Bookmark your site on social bookmarking sites like stumbleupon and digg. Ping your site often. Try pingomatic and pingler. Leave comments with linkbacks to your site on other people's blogs and sites. Write articles and publish them at places like ezine. Don't forget to add your site to the major search engine indexes. They all have places where you can manually add your site.
yahoo.com is the competitive site with Google
Feedburner is a site run by google. By logging in with a google account, you may subscribe to other people's feeds. feedburner.google.com
Because Google will often bring them here.