NPR’s Fresh Air shared a message from Tumblr customer service on its own Tumblr blog talking about dealing with spam blogs, which evidently has become an increasingly big problem for Tumblr.

“Please know that we’re aware of a recent increase in blogs with odd URLs that are following large numbers of users. We’re doing everything we can to quickly suspend these blogs and to keep more of them from being created,” the message says. “As Tumblr finds and suspends these blogs, you may see that your Followers count seems incorrect for a period of time. Our Follower indexing system time to recognize that a given blog has been suspended and to then not count that suspended blog in your Followers count. We’ll update your Followers count correctly after a period of time.”

“The fact that one or more of these blogs has Followed you, Reblogged your content, or Liked your content will not compromise the security of your Tumblr account or the security of your computer in any way,” it continues. You can read the whole message here.

It does remind he user that you can always use Tumblr’s blocking mechanism:

Tumblr spam is not something we see discussed a whole lot, but apparently it’s getting worse. This isn’t much of a surprise, considering the service continues to experience tremendous growth (President Obama’s campaign even joined it this week).

Tumblr recently secured a new $85 million round of funding, bringing the total funding to $125 million. Recent reports had Tumblr at 6.5 billion monthly pageviews ,and Nielsen indicated that it has nearly tripled tis unique U.S. audience.