tastytrade bars bulk email and posting on coupon or referral-traffic sites, but does not address a personal blog or forum either way.
What the clause says
tastytrade requires referrers to comply with spam laws and bars commercial solicitation in connection with the program. Emails carrying your link must be created and distributed in a personal manner to people you know, and bulk email distribution is not permitted. Separately, distributing your link on coupon sites or other websites created to capture referral traffic from people searching for codes is expressly prohibited, and is stated to be grounds for immediate account termination.
Read the scoping carefully
It is tempting to compress this to friends and family only, and that would be wrong. The people you know wording is scoped to emails, introduced as an example. The website prohibition is scoped to coupon and referral-traffic sites. A post on a personal blog or a forum is not addressed either way. tastytrade also defines the audience more broadly than family, as a friend, colleague, or any other eligible individual you know.
What it means for a link exchange
A site whose purpose is to collect referral links for people searching for them is close to the description in the prohibited-conduct clause, whoever operates it. Dealaka hosts no tastytrade referral links.