Just as America's adoption of catalytic converters led eventually to the world's conversion to lead-free petrol, so its drive to clean-energy technologies will ensure that these too spread.

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While I understand that technology must move forward, manufacturers should offer pain-free conversion paths.

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At the time, SOFTBANK was only partway through a cloud conversion, but it turned on free cloud service for non-profits, government agencies and existing customers in just three days.

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Last week, Thiel filed with the SEC to disclosure the conversion of 9.3 million of his Class B shares into free-trading Class A shares.

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After you pay conversion taxes at 2012 rates, growth in your Roth IRA will be tax-free for life.

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Wigan's efforts were aptly summed up by Hugo Rodallega's woeful free-kick from 30 yards that was more akin to a rugby conversion, and they continued to struggle after the break.

BBC: Portsmouth 4-0 Wigan

You get a free extra point after touchdowns unless you want to make a two-point conversion.

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