There’s a Fransiscan who goes by the name of JReducation (spelling?). There are a few more I think, but I can’t remember their names.
Brother JR, FFI, is a friar. Franciscan Friar of the Immaculate, as I recall.
Brother David, O. Carm, is a Carmelite Friar.
Friars are not monks. Friars have a different work style - both are consecrated religious. Monks properly live in seclusion from the world, being defined as such by St. Benedict, whether they be cenobites, anchorites, or hermits.
Friars have public ministries, but are otherwise living much like monks - shared prayers, solemn vows, communal life.
Likewise, those in communities which do not take solemn vows are generally not considered monks nor friars.
It would be rare for western Monks to be participating on a BBS. Most of them are contemplatives, isolating themselves off from the outside world, either to ministries to the outside that can be done from the monastery with limited outside contact (wine making, host making, raising seeing eye dogs), or which have no need of outside contact (sometimes totally self-sufficient). Some even include hermitages who only join together for prayers and for matters affecting the whole community.
Eastern monks (especially of the Byzantine Rite Churches) may have public ministries, like friars, but often do not. Like friars, they remain in the world, at least some of them. Unlike friars, the public ministry is seldom the charism of the community, but may be, as in the case of hieromonks and hierodeacons, a particular charism to serve the local faithful in parish ministry.
There have been several Eastern Monks who have been posters; one that come to mind was a hieromonk “Independent Orthodox” monastery. They were, as far as can be told online, part of one of the splinter groups from the Russian Orthodox or Greek Orthodox, but they came into union with Rome as an individual, but continued to live their monastic vows. I’ve not seen them on lately. Their specific individual ministry was specifically on-line evangelization.