"Celebrities get involved in these all of the time, and they have been known to make bad investments."

Gangsta rapper 50 Cent has a beef with a Bradenton company. The hip-hop heavyweight has sued Sleek Audio LLC for a $285,000 promissory note he lent the company in April 2010, which remains unpaid, court records show.

The partnership originally resulted in the "Sleek by 50" wireless headphones that were announced at the 2011 CES convention in Las Vegas and written about in Rolling Stone Magazine and other national publications.

Read more at the Bradenton Herald.