Its algorithms can suggest the best price to bid for keywords, based on where the ad will appear on the results page and how many other bidders are present, factoring in constantly changing auction prices.

FORBES: The Keyword Keeper

Such speculators bet on a stock's price falling, and a bid by the founder is almost a guarantee that it won't.

FORBES: Magazine Article

Mr Kerr said tendering for the provision of public services has moved on from the days when the lowest bid would win to a position now where both price and quality were given equal consideration.

BBC: Roadworks drill

So the bid and ask price will be the same as it would be on an exchange.

FORBES: How Dark Pools Harm Public Investors

The bid price is 6.6% higher than the closing price on 30 December, the last business day before the two companies confiirmed they were in talks.

BBC: Thomson-CSF seals Racal deal