Question:

If Prabhuji is retired from public life, why do you publish his picture, make a site for him on the internet, and so on?

Answer:

Prabhuji is our master and the founder of the mission. The tradition of the Sanātana-dharma religion advises the glorification of the guru by his disciples. As mentioned Śrīla Viśvanātha Cakravartī Ṭhākura:

yasya prasādād bhagavat-prasādo
yasyāprasādān na gatiḥ kuto ’pi
dhyāyan stuvaṁs tasya yaśas tri-sandhyaṁ
vande guroḥ śrī-caraṇāravindam

“By the mercy of the spiritual master one receives the benediction of Kṛṣṇa. Without the grace of the spiritual master, one cannot make any advancement. Therefore, I should always remember and praise the spiritual master. At least three times a day I should offer my respectful obeisances unto the lotus feet of my guru.” (Śrī Śrī Gurvaṣṭaka, 8)

By glorifying our master, we are just following our millennia-old tradition. The Śrīmad-bhāgavatam says:

rahūgaṇaitat tapasā na yāti
na cejyayā nirvapaṇād gṛhād vā
na cchandasā naiva jalāgni-sūryair
vinā mahat-pāda-rajo-’bhiṣekam

“My dear King Rahūgaṇa, unless one has the opportunity to smear his entire body with the dust of the lotus feet of great devotees, one cannot realize the Absolute Truth. One cannot realize the Absolute Truth simply by observing celibacy (brahmacarya), strictly following the rules and regulations of householder life, leaving home as a vānaprastha, accepting sannyāsa, or undergoing severe penances in winter by keeping oneself submerged in water or surrounding oneself in summer by fire and the scorching heat of the sun. There are many other processes to understand the Absolute Truth, but the Absolute Truth is only revealed to one who has attained the mercy of a great devotee.” (Śrīmad-bhāgavatam, 5.12.12)