twitter and last.fm

Both twitter and last.fm are presently blocked in the UAE--neither website offers adult content.

A brief description of twitter from wikipedia...

"Twitter is a free social networking and micro-blogging service that allows users to send "updates" (or "tweets"; text-based posts, up to 140 characters long) to the Twitter website, via short message service (e.g. on a cell phone), instant messaging, or a third-party application such as Twitterrific or Facebook."

A brief description of last.fm from wikipedia...

"Using a music recommendation system known as "Audioscrobbler," Last.fm builds a detailed profile of each user's musical taste by recording details of all the songs the user listens to, either on the streamed radio stations or on the user's computer or portable music device. This information is transferred to Last.fm's database ("scrobbled") via a plugin installed into the user's music player. The profile data is displayed on a personal web page. The site offers numerous social networking features and can recommend and play artists similar to the user's favourites."

Do either of these sites sound offensive in any way?