Okay, sat down and wrote down 10 city names at random to see whether they have official twitter profiles. Got lots of stuff on Olympics, shopping, weather, jobs, etc but found very little official city profiles. See below:

• London: no
• Rio: no
• Cape Town: no
• Berlin: no
• Rome: no
• Paris: no
• Beijing: no
• Singapore: yes, visitsingapore
• New York: no
• Toronto: yes, torontocouncil

do you see a gap somewhere too?

Last year April I was in Paris and what a great time of the year to be there.
If you have the time and money, go this April, do all the tours and see the attractions and then attend ad:tech Paris.
According to their latest newsletter:

Looking to expand into the European or French market - or already there? Consider ad:tech Paris. Leading digital companies (i.e. Yahoo, Google, ad’link, Netvibes, PriceMinister, Seesmic, Ozone) come together with the most influential international advertisers (i.e. Coca Cola, La Poste, Danone) and their agencies (i.e. Avenue A Razorfish, Nextedia, DDB) to share concepts and visions; to exchange results and experiences.

I really enjoyed the topics of discussion, the level of presenters and the networking, interaction and new opportunities at ad:tech New York in November last year and can only imagine that Paris will be of the same high standard.