Is using Islamic marriage sites to find a husband, Halal?

Praise be to Allah, the Lord of the World; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.

Internet is merely a means of modern communication. So, there is no harm is using it according to the rulings of Shari'a. Therefore, it is permissible to seek a husband or a wife through Internet provided the sites that offer the matrimonial services are trustworthy. As per our knowledge there are some reliable sites that provide good services; they keep the information of both parties confidential, and do not permit an exchange of pictures. There is much harm in exchanging pictures, someone may use such pictures for bad purpose and subject the woman to his bad intentions, etc.
In a word, if there is any trustworthy site that is certified by the Islamic authorities then there is no harm in seeking a marriage partner through it, even though we believe that this is not recommended. The safest way is to seek a husband/wife through matchmakers. We supplicate Allah to guide us to the truth in words and actions as well.
Allah knows best.