The TagMe service is now hosted by D4Science and integrated in the EU H2020 SoBigData e-infrastructure.
To start using TagMe, access the new TagMe site.
If you already have an active access key, you will soon receive an e-mail describing the steps you need to take.
This site will be discontinued in a few moths.
Get now to the new TagMe site!
(In case you are determined to access the old site, click here)