To join Dust Sweeper you simply transfer SBD (or STEEM ) to @dustsweeper .

Dusty will drop a $0.02 upvote on any post in your account that has STEEM DUST. The total number of upvotes is based on the money that you send to your account. Essentially, if you given him $0.10 SBD, he will give you 5 upvotes on posts below the dust threshold.

In my first year of SteemIt, I lost rewards on about 150 posts. Since I started using dusty, he has upvoted 191 posts (mostly comments) and saved me $1.16 in STEEM DUST.

There is another service called @dustbunny . To join this program, you need to contact the author through his discord server.

BTW, the best way to avoid STEEM DUST is simply to avoid upvoting comments ... unless, of course, the value of your upvote is over $0.02.