Feed The Bot is a very nice website that has some interesting free tools and Google Guidelines.
If you go to the Tools page you will a spider simulator, social count tool, link count, Gzip checker, and the tool I like the most is the Image SEO Tool.
For the guidelines, you can fin them in this infographic, or go for more details on the site here
If you go to the Tools page you will a spider simulator, social count tool, link count, Gzip checker, and the tool I like the most is the Image SEO Tool.
For the guidelines, you can fin them in this infographic, or go for more details on the site here
