Starting to think they do more harm than good, at least when the direction is twitter->mastodon. Yeah it lets twitter folks try mastodon without committment, but that lack of committment is also a problem. It also lets a lot of twitter bs seep into the fediverse.
@Gargron i totally agree. i reeeeally hate the practice of crossposting twitter RTs. like fine, link to twitter posts if followers here will find them interesting, but automated streams of RTs are just... ugh