You should, perhaps, be concerned if

- the bar you've walked into has karaoke advertised as starting at 9 am.
- you work for an organisation who've just posted a loss of £225 million.
- you work for HMV. 
- the burger you are about to eat is a tie in with a summer blockbuster.
- it claims to be something "flavour".
- your only hope of rescue is a deal with a Chinese car manufacturer.
- it costs you more than £2 a minute to answer the question you've been asked.
- their answer to 4 minus 2 isn't "2"
- it's a free scratch card with a peak rate telephone "winners hotline".
- it's damaged repaired. 
- it's reconditioned.
- the brand name isn't spelt quite the way you remember. 
- the unsolicited pop-up on the website says "trusted download".
- the healthy option has more fat and salt than the unhealthy option.
- your Orange juice has had colouring added from something that isn't an Orange.
- your fruit flavour drink contains vegetable fat. 
- it has "modified starch" listed amongst the ingredients. Unless it is wallpaper paste.
- they associate sporting prowess with drinking fermented vegetable juice.
- they associate "extreme" sports with their chemical tasting energy drink.
- it's an "extreme" sport. 
- they use a local radio DJ to advertise their products. 
- Jools Holland likes them. 
- their latest album consists of cover versions and contains the word "Songbook"  
- what they do is prefixed with the word "celebrity."
- it is referred to as a "house spirit."
- they refer to Carlsberg as a "premium lager".