Is it permissible to log in daily to forums by writing the name "Sheikh or Artist or Poet" in a dedicated thread for that purpose?

It is not permissible to register attendance in the forum by mentioning an immoral artist or poet, because it is a means to become attached to such people and to take them as role models in evil. It is permissible to register attendance in the name of a righteous Sheikh or poet, but it is better to use general good phrases that remind one of good, such as seeking forgiveness (Istighfar) and sending blessings upon the Prophet, peace and blessings be upon him, while being cautious not to exaggerate in praising individuals.