I want to set up an application for puting a hashtag in Trending Topic list. I used a php application with oauth. Like this; $connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, $access, $secret); $connection->post('statuses/retweet/'.$rtid); I have 1000 accounts and all of them are connected to that application. But when I try to post a tweet with it, the hashtag doesn't shown in TT list. Even if I RT a hashtag on TT, it seems that hashtag doesn't stay there. I think my system spams the hashtags. How can I put a word into TT list? There are some people does this just fine. But I can't. Is it because all retweets are being sent from same IP? If it is, how people does this job?