Spam levels on Twitter have dropped to below one percent, the micro-blogging service claims.
According to Twitter, spam levels hit 11 percent in August 2009 but were cut to just under one percent by February this year.
"Posting harmful links to phishing or malware sites, repeatedly posting duplicate tweets, and aggressively following and un-following accounts to attract attention are just a few examples of spam on Twitter," said Abdur Chowdhury from Twitter, in a blog.
"We're constantly battling against spam to improve the Twitter experience and we're happy to report that it's working. While the battle will never be over, we're doing well on the front lines."
Twitter also urged users of the micro-blogging service to "click the 'report for spam' link on any suspicious profile page".
"This action alerts us about the account and blocks the account from following or replying to you," added Chowdhury.