Sort:  

I am not a robots.txt expert... but I think so...
at least you tell them which bots are allowed what pages and others are delayed crawling... or something like that

Coin Marketplace

STEEM 0.04
TRX 0.33
JST 0.099
BTC 63658.39
ETH 1767.49
USDT 1.00
SBD 0.39