At least one person seems to think so. Steve Rubel over at MicroPersuasion writes: 37Signals – the geniuses behind Ta-daList, BackPack and BaseCamp – plan to launch a new Web-app next week called Writeboard. Some are speculating that it will resemble Writely – an AJAX-based collaborative word processor. Writeboard’s tagline is “Write, share, revise, compare.”…