Can people see your phone number on ICQ?
By the way, other users will only see your ICQ number until they enter your number into their phone book. You can input the gender, age and location of the person youre looking for in the advanced search options. Whats more, ICQ will display people you might know or who have mutual friends with you.
How do I chat with ICQ?
0:001:06How to Join ICQ Chat Room Without Installing ICQ Client - YouTubeYouTube
Whats a ICQ number?
ICQ users are identified and distinguished from one another by UIN, or User Identification Numbers, distributed in sequential order. The UIN was invented by Mirabilis, as the user name assigned to each user upon registration.