If you are looking at getting a few more twitter or FB likes it works ok. I see some people do it then remove but a few actually stay
It's useful but I'm not seeing any big change in my traffic or SEO. I'm mostly using it to bolster my buzzfeed posts.
The same happened to my blogspot site!!! I have been PR0 for the last year since it was created. Then after starting to use linkcollider I am now PR2 after a couple of days!!
Not impressed by it. One of my sites shows 3600 views, however looking at the dashboard on my website and on analytics it doesn't correlate. Only shows around 300 and that includes "repeat" visits.
I have increased 143% in visitor traffic but the bounce rate is up 191% which means no traffic conversions on anything.