Paris Hilton

It's not always easy being Taylor Swift.On Wednesday, police officers arrested a 22-year-old man attempting to trespass at the country super star's Rhode Island home. Swift was not home at the time, and when he was questioned by the police the man allegedly said he was there to visit the songstress.  But Swift isn't alone. Many other stars, including Rihanna, Whitney Houston and Paris Hilton, have had similar close calls with fans who've crossed the line.So how can celebs anticipate when a fan may go too far?"The warning signs from being a super fan to an obsessed fan are nonstop tweeting, constantly tweeting or showing up at events, saving up all their money from their part-time job and showing up at every concert..." TV host Brian Mcfayden told FOX411. "You've got to understand that the world that we're living in now, [stars are] easily accessible because of social media, and we've never ever seen celebrities being so accessible especially mega-celebrities like Taylor Swift. As a fan...

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