Generate an appropriate single-sentence summary for the given text such that it includes the main topic of the text.

By BBC TrendingWhat's popular and why Looters were not bragging on Twitter Thousands of tweets were sent using hashtags such as #Harveylootcrew or #Houstonlootcrew. The most popular images being shared showed wrecked shops, and expensive phones and computers. Some were posted by accounts labelled as "satire" or "parody", and others were on obvious hoax accounts - ones set up in the last few days and which were tweeting exclusively about looting. Hoaxers have used social media to exaggerate reports of looting during previous disasters and protests - for instance during Hurricane Sandy in New Jersey in 2012 and the unrest in Ferguson, Missouri in 2014. In Houston, there were some reports of theft, but on a small scale. Police Chief Art Acevedo said four people were arrested on Monday. This photo does not show Houston's airport A photo of submerged planes made the rounds online, purporting to be an image of Houston's flooded airport. The photo was actually a speculative illustration from the website Climate Central, showing what La Guardia Airport in New York might look like in the year 2100 if sea levels continue to rise. There were authentic and striking photos of underwater runways posted by local journalists, however, they lacked the dramatic touch of including flooded airplanes: You might also be interested in: Police aren't checking immigration papers at shelters It's unclear where the rumour started, but Houston authorities were moved to deny via Twitter that they would ask anyone for proof of immigration status at a temporary shelter. The message was posted in both English and Spanish A shark was not spotted on a freeway Scottish journalist Jason Michael tweeted a ridiculous Photoshopped picture of a shark supposedly making its way down a Houston freeway. He never meant it to be taken seriously, but thousands were fooled, and Michael wrote a blog post detailing some of the abuse and outrage that was directed his way. And other false rumours... Tweets made the rounds claiming that authorities were shutting down water or restricting re-entry into cities, or urging those in danger to phone a number linked to an insurance company. The Houston Chronicle collected some of the false rumours in a photo gallery and quoted Houston Mayor Sylvester Turner as saying the rumours "are interfering with efforts by the city of Houston, and its government and news media partners, to provide accurate information to the public". Blog by Mike Wendling You can follow BBC Trending on Twitter @BBCtrending, and find us on Facebook.
As rescue operations continue in Texas and Louisiana, a number of fake stories and false rumours have circulated online about Tropical Storm Harvey. BBC Trending has spotted some of the most viral fakes:

The pier owners and his husband Jamie Moran have been in discussions for several months about the plan. The Hull-born performer, who died in August, had his first summer season at the pier in 1987. The Joe Longthorne MBE Theatre will be officially opened on 30 May followed by a gala evening on what would have been the entertainer's 65th birthday. A small museum dedicated to him with memorabilia including his grand piano, MBE and gold disc will open next to the theatre. Mr Moran said the singer and impressionist would have been "thrilled and delighted" with the honour. He added: "He simply loved the feel of the theatre right at the end of the pier looking out on the Irish Sea." Longthorne, who made Blackpool his home, performed more than 20 seasons in the 1,400 capacity theatre on the Grade II-listed pier which he described as his all time favourite venue. Born to a travelling background, Longthorne received his big break on the ITV series Search For A Star in 1981 and featured regularly featured on other TV programmes in the 1980s, the Royal Variety Performance, and also appeared in theatre in the US and at the Sydney Opera House.
The theatre at Blackpool North Pier is to be renamed in memory of entertainer Joe Longthorne who died last year.

The move was announced by the Nato military bloc, of which both countries are members. Tensions rose this year when Turkey sent a research ship to a disputed area. It comes as EU leaders met to discuss the bloc's thorny ties with Turkey. Turkey has been a long-term candidate for membership of the European Union but efforts have stalled, with EU leaders criticising Turkey's record on human rights and the rule of law, in particular in the wake of the 2016 failed military coup. But Turkey remains an important partner for the EU. Turkey hosts millions of migrants and struck a deal with the EU that limited the numbers arriving in Greece. The announcement of a hotline followed talks between Turkey and Greece at the Nato headquarters in Brussels. "I welcome the establishment of a military de-confliction mechanism, achieved through the constructive engagement of Greece and Turkey, both valued Nato allies," said Nato Secretary-General Jens Stoltenberg. "This safety mechanism can help to create the space for diplomatic efforts to address the underlying dispute and we stand ready to develop it further." Such mechanisms enable direct communication between two sides - Russia and the US set one up during the Cold War and it has been in operation ever since. In August two Turkish and Greek war ships collided in the Eastern Mediterranean. Since then tensions have eased somewhat, with the Turkish research vessel leaving the area last month and both sides saying they were prepared to resume talks. News of the hotline emerged as EU leaders arrived elsewhere in Brussels for a summit. The bloc has backed its members Cyprus and Greece against Turkey. Greece's Prime Minister Kyriakos Mitsotakis said Turkish "provocations" had to stop. "One thing is certain: Turkish provocation, whether manifested through unilateral actions or through extreme rhetoric, can no longer be tolerated," he said. French President Emmanuel Macron said support for Greece and Cyprus - which also has claims on Mediterranean resources - was "non-negotiable", while Austrian Chancellor Sebastian Kurz has called for sanctions against Turkey. Turkey's President Recep Tayyip Erdogan blames Greece and Cyprus for the tensions but in a letter to EU leaders said he wanted dialogue. The EU is split on how to tackle Turkey, and divisions spilled into another key item on the agenda - Belarus, with the bloc refusing to recognise Alexander Lukashenko as the president following a disputed election. Cyprus has been blocking EU attempts to impose sanctions on Belarus, wanting the EU to first impose them on Turkey. All 27 members of the EU reject the results of the election in Belarus but Cyprus would need to drop its veto for sanctions to go ahead, The EU's foreign policy chief, Josep Borrell, last month warned "our credibility is at stake" if an agreement could not be reached. Talks continue for a second day on Friday, with officials still drafting a summit declaration.

Turkey and Greece have set up a military hotline to try to reduce the risk of clashes in the Mediterranean, where the two are locked in a row over energy resources and maritime borders.

