Blooming occurs on an HDTV when light from a bright area of the screen bleeds into a darker area, creating a glow, halo, or bloom effect around the bright object. It usually occurs in areas of high contrast such as white letters on a black background.

Below is another example. Note the grayish halo around the letters:

Because the problem is inherent to how each HDTV handles dynamic backlighting and contrast, there is no way to fix the problem short of purchasing another television.