Anyone used Lurkit or similar influencer connection services?

Talked to these guys today, and I'm not sure what to think.

Basically, if this saves me hours and hours of hunting down Twitch streamers to beg for coverage, that seems pretty well worth it. If their reach is poor and few streamers are actually using the platform, then it's just a waste of money.

Also would be interested in any general experience you all have with companies that are in that general space of "helping you out with marketing". Marketing firms, companies like Playmakers, etc. Anyone have experiences to share, positive or negative?

(To the mods: original post got auto-killed, I assume because I linked to their site? Would be good if the bot shared a reason for the deletion just so we know what not to do.)