There have been problems today on Twitter which started after 8.00am this morning. This has resulted in some people not being able to access Twitter at times and just getting an error page:
http://www.bbc.co.uk/news/technology-35351154
There were also issues with Twitter's application program interface (API), which allows websites and apps to connect to Twitter, principal analyst Sheridan Nye told the BBC.
That presumably explains why the twitter feed this morning didn't start until 9.50am with the tweet "Aaaand we're back. The housemates are (almost) up. Danniella and Christopher are enjoying a cup of tea in the garden"