Two days ago my #BridgyFed followers crossed 8-bits:
https://fed.brid.gy/user/tantek.com

Signs of #TwitterMigration: my prev post had ~2x more #fediverse responses than Twitter, a ~500:1 difference per follower (having ~250x more Twitter followers).

Many possible factors. Mastodon users see more from their followings. Twitter accounts could be mostly bots or abandoned. Recent posts are technical, maybe Mastodon users are more technical. Tech friends migrated first. Or hashtagging #fediverse.