Meaningless Slogans

Ever notice how many slogans, taglines, or other brand statements are completely meaningless?

Real estate agents seem particularly bad for this. "Your professional partner", "A strong choice", "Enabling smart choices"... Did they all attend the same seminar or something, telling that they should start branding themselves?

Or check out hair care brand Tresemme's (one of many) lines:
"Used by professionals"

Wow. This says something and yet nothing at the same time. Could they be any more vague?
How is it used? For their clients or themselves? As a shampoo, or as hubcap cleaner?
Do they still use it, or is the implication that it was once used by professionals at some point in the past?
And who are these professionals? The shampoo company's lawyers? A couple of employees in the HR department?

I hate to think how bad or pointless some of the slogans they didn't pick must have been.