Grono
Grono.net is a largest social networking website in Poland. Grono.net website gathers people belonging to a closed community, in which user may find their friends and colleagues and visa versa. In order to become the member of Grono.net community; user have to have an invitation from someone who is already member of this website. Apart from many discussion forums it allows to share photos and find cultural events in particular cities. On Grono.net users can do their business of selling property and find work.

Grono.net website is free but there are a number of additional features for paying subscribers, such as the ability to moderate your own forums, take part in competitions, upload more photos and remove on-site advertisements. Grono.net has over 1,300,000 members. Grono.net services provide its users privacy as they wish to have. Users can decide which data is secret and which can be shown to others.