Which? has accused manufacturers including Apple, Google and Amazon of charging way over the odds for tablets with higher memory capacities.
Amazon has defended the use of a swear-word on a Christmas card as “light-hearted.”
A clothing company has apologised for selling T-shirts with the slogan 'Keep Calm And Rape' - claiming it was a mistake.
Tesco is reportedly planning its own tablet computer this year to win back book and DVD sales from technology giants Apple and Amazon.
Priced at around £100 to compete with Amazon's Kindle Fire, the tablet is expected to come pre-loaded with content and apps including Tesco's new movie, music and e-book subscription service Blinkbox.
Tesco declined to comment on the report in the Times newspaper.
The supermarket has been looking to reinvigorate its business since annual profits fell for the first time in decades in April, while it was recently forced to scrap a high-profile expansion in the US.
Amazon founder Jeffrey Bezos, who is buying the Washington Post for a reported $250 million, is doing so as an individual and Amazon.com Inc. is not involved in the purchase, Reuters reports.
Washington Post chairman and CEO Donald Graham called Bezos a "uniquely good new owner" and said the decision was made after years of newspaper industry challenges.
Bezos said in a statement that he understands the Post's "critical role" in Washington and said its values won't change.
"The paper's duty will remain to its readers and not to the private interests of its owners," Bezos said to Post employees in a letter. "We will continue to follow the truth wherever it leads, and we'll work hard not to make mistakes. When we do, we will own up to them quickly and completely."
Rarely has there been such a dramatic example of a sign of the times. Jeff Bezos, not so very long ago the founder of an internet start up company, has bought the Washington Post, one of the United States' most respected newspapers.
What is more he has paid the $250 million out of his personal fortune.
What beckons now could be a massive shake-up of the American newspaper industry which has been suffering as ad revenues and circulations fall. And as our newspaper industry struggles too it's worth remembering where America goes the UK often follows.
Amazon boss Jeffrey Bezos is to buy the Washington Post newspaper for a reported $250 million.
In a lead article on the newspaper's website Bezos is quoted as saying: "This will be uncharted terrain and it will require experimentation."
The sale will end the Graham family’s stewardship of the paper after 80 years and four generations.
Bezos founded Amazon nearly twenty years ago, when he was 30 with a $300,000 loan from his parents, and started working from the garage.
Online retailer Amazon today told customers they will have to spend a minimum of £10 to qualify for the site's "Free Super Saver Delivery" option.
The limit applies to all products except books, DVDs (including Blu-ray), music, video games and computer software.
In a statement sent to customers, Amazon said the the change - effective from today - "will affect only a very small proportion of orders".
However, numerous departments such as electronics, clothes, DIY, health, beauty, sports and jewellery will be affected.
Online retailer Amazon has stepped up the battle for music sales with the announcement that it will give away digital versions when customers buy CDs and vinyl records - and they will backdate for any past purchases.
The free MP3 service, named AutoRip, will enable Amazon customers to have instant access to music they have bought days before their purchases arrive in the post.
The firm has already lined up in excess of 350,000 albums for AutoRip with more titles to be added, and said there will be no knock-on effect on its prices.
Tracks will be added to customers' Amazon Cloud Player account and can either be streamed or downloaded to devices such as iPhones, iPads, Kindles and smartphones.
– A spokeswoman for tax avoidance campaign group UK Uncut
It's an absolute disgrace that Amazon is paying such tiny amounts in tax.
The Government should be clamping down on tax avoidance rather than slashing the welfare state, privatising the NHS and cutting legal aid for ordinary people.
This shows us yet again that the Government is making a political choice rather than an economic necessity.
- Amazon's main UK subsidiary paid just £3.2m in tax last year, according to official accounts, despite overall UK sales of £4.2bn.
- Amazon's taxes for last year are only marginally higher than the £2.5m the company received in government grants during the year.
- The company's tax bill was £1.9m in 2011, but these sums may not actually be paid to HMRC because of cumulative losses across the Amazon group.
- Amazon employed 4,191 people at the end of 2012 in the UK but reduced payments to the British government by routing sales via a subsidiary in Luxembourg.
- The UK company declared a turnover of £320m for 2012, up 50% on 2011.
- However, its income is largely raised from other Amazon companies in return for services such as warehousing and distribution and negotiating purchasing deals with book publishers.
Today's scheduled Google grilling comes as the chairwoman of the committee, Margaret Hodge, revealed that Amazon also faced being hauled back to explain its financial dealings.
A Guardian investigation claimed its company filings showed its main UK company paid £3.2 million in corporation tax on sales of £320 million last year while the Seattle-based group told investors its 2012 UK sales were £4.2 billion.
Mrs Hodge told the Guardian:
My committee has real concerns about the extent to which companies like Amazon are stretching the rules in order to avoid paying their fair share in tax.
By any measure of common sense Amazon appears to have a proper established presence in the UK, and that there is a discrepancy between some of the evidence in this report about its activities in the UK and what the committee was told by Amazon when they appeared before us last year.
We will now consider whether we need to recall them to explain that discrepancy.
A report last December by the committee accused both companies, along with Starbucks, of "immorally" minimising their UK tax bills.