Is there an easy way to check? Head over to SEO Penalty and put the domain of the site in question in their form. You’ll receive a rating back ranging from 0 to 10 on how much Google has downgraded your site. Zero means fine and dandy while a ten means they’ve caught on and you need to clean up your act.
A common question folks ask is if their site has been penalized by Google and it’s Googlebot. It does happen if webmasters use too many tricks to promote their website and if and when Google catches on to what they’re doing. Things like hiding links, overloading pages with keywords, bugging Google with update notifications, and the like will tick off the search engine giant and get your site removed from Google’s database.