I wouldn't say it would be that bad of an idea in theory, but it probably wouldn't work.
There'd be too many posts where it's one person talking about their quick-fire server, with little information and some spammy emotes. (Cum 2 my srvr u gt

)
And then there would be posts following it filled with Drama from players visiting that server, or getting annoyed at the OP.
I think it's better off with people posting their servers in Gallery and General Discussion, because they tend to have to have good quality information or pictures on there to keep those topics fresh on the forum.
Plus, we can already use the blockland.us server browser to view servers from outside of Blockland.
Although I do wish it had a search-function so that you could actually search for host-names.
Ctrl-F doesn't work for searching it.